HOME  >  Faculty Members  >  Resume of Faculty Members Search: > Faculty Members > A. Ardalan, Alireza Scientific Position:Associate Professor Ph.D.: Geodesy, University of Stuttgart, Stuttgart/Germany. M.Sc.: Geodesy, K.N. Toosi University of Technology, Tehran/Iran. M.Sc. (Second):Geodesy, University of Stuttgart, Stuttgart/Germany. B.Sc.: Surveying Engineering, K.N. Toosi University of Technology, Tehran/Iran > Researches on GPS Analysis and modeling of ionospheric error based on GPS observations at the permanent GPS stations (together with M. Baes) Tropospheric modeling for GPS observations (together with M. Jafari) Computation of atmospheric water vapor by GPS (together with B. Shoorche) Design of a DGPS network at the southern coast of Iran for hydrographic and navigation applications (together with M. Gattabi) Ionospheric Refraction Modeling by SARIMA Analysis of Time Series of GPS Permanent Stations (together with M. Delghandi) Analysis of observations at permanent GPS stations (together with N. Abdi) Design and implementation of the first Iranian Differential Global Navigation Satellite System (IDGNSS) (together with S.S. Nabavi) Towards establishment of a national Precise Ephemeris service via national-wide permanent GPS stations (together with A. Gholamali) Verification of possibility of using GPS in read-time mode for longitudinal profile computation of the railway tracks (together with A. Jandaghi-Alaie) > Summary of Professional Activities 1988-1995 Member of Staff, Surveying Department, Faculty of Engineering, University of Tehran, Tehran/Iran. Invited lecturer at the Surveying Department of K.N. Toosi University, Tehran/Iran, Surveying Department of Imam-Housain University, Tehran/Iran. Scientific cooperation with National Geographic Organisation of Iran. 1.2000-3.2000 Research assistance at the Department of Geodesy and GeoInformatics, University of Stuttgart/Germany 4.2000-10.2000 Research and teaching assistance at the Department of Geodesy and GeoInformatics, University of Stuttgart/Germany. 11.2000-3.2005 Assistant Professor at the Department of Surveying and Geomatics engineering, Faculty of Engineering, University of Tehran/Iran. 12.2000- 7.2006 Head of the Department of Surveying and Geomatics engineering, Faculty of Engineering, University of Tehran/Iran. 1.2001- Head of the Geodesy Laboratory 1.2001- Head of the Hydropraphy Laboratory 9.2001-11.2001 Guest Professor, at the Department of Geodesy and GeoInformatics Stuttgart University, Stuttgart/Germany. 12.2001-12.2004 Editor of the Journal of the Faculty of Engineering, University of Tehran. 8.2003-10.2003 Guest Professor at the Darmstadt Technical University (DAAD Guest Professorship) 8.2003-8.2007 Member of International Association of Geodesy Inter-Commission Project 1.2: Vertical Reference Frames 3.2005- Associate Professor at the Department of Surveying and Geomatics Engineering, Faculty of Engineering, University of Tehran 1.5.2005-31.8.2005 Guest Professor, at the Department of Geodesy and GeoInformatics Stuttgart University, Stuttgart/Germany. 1.8.2005- Member of founding board of “Center of Excellence of Geomatics Engineering and Disaster Prevention” of University of Tehran 1.9.2005-30.9.2005 Visiting Finnish Geodetic Institute (FGI) Masala/Finland for joint research activities with Prof. Markku Poutanen head of geodesy department of FGI. 12.2005- Editor of the Nasir Journal of Science and Engineering, K.N. Toosi University of Technology. 1.1.2006- Member of Earthquake Precursor Council of the Institute of Geophysics, University of Tehran, Iran. 2005- Director of Center of Excellence in Geomatics Engineering and Disaster Prevention. 22.04.06- Member of editorial board of “Journal of University College of Engineering”, University of Tehran 17.09.07-19.03.08 Sabbatical leave at the Institute of Geodesy, Stuttgart University. 15.11.07-28.12.07 Visiting Professor of the Finnish Geodetic Institute (FGI) Masala/Finland for joint research activities on local geoid computations and height datum unification.. > Undergraduate Course Teachings Theory of error Adjustment and statistical tests Geodetic Surveying Fundamentals of Geodesy Geodetic Astronomy > Supervised M.Sc. Students Mrs. M. Baes. Defended in Aug. 2001. Title of thesis: Analysis and modeling of ionospheric error based on GPS observations at the permanent GPS stations. Mr. R. Esmailli. Defended in Oct. 2002. Title of thesis: 3-D deformation analysis using invariant parameters. Mr. G. Rostami. Defended in Oct. 2002. Title of thesis: 4-D time-space modeling of sea surface variations. Mr. M. Moseyebzadeh. Defended in Dec. 2002. Thesis title: Computation of Sea Surface Topography in Persian Gulf and Oman Sea. Mr. H. Hashemi-Farahani. Defended in Aug. 2003. Thesis title: Global and local tidal analysis and computation of co-tidal and co-phasal maps via Topex/Poseidon altimetry data. Ms. M. Jafari. Defended in Jul. 2003. Thesis title: Tropospheric modeling for GPS observations. Mr. M. Afsharipoor. Defended in Sep. 2003. Thesis title: Regional modeling of refraction error of electronic distance measurement. Mr. R. Karimi. Defended in Sep. 2003. Thesis title: Adjustment of precise first order leveling network of Iran and computation of geopotential numbers for the whole network. Mr. M. Sohrabi-Athar. Defended in Mar. 2004. Thesis title: Increasing productivity of hydrographic chart production by incorporating GPS and satellite altimetry data into traditional hydrography operation. Mr. R. Arab-Sahebi. Defended in Aug. 2004. Thesis title: Local gravity field modeling at sea areas based on satellite altimetry data. Mr. S. Jazaeri. Defended in Sep. 2004. Thesis title: Revision of the orthometric height computation formulation from geopotential numbers to improvement its accuracy level. Mr. M. Shirzaii. Defended in Jan. 2005. Thesis title: A new method for 3-D positioning of subsurface structures for oil exploration. Mr. B. Shoorche Defended in Jan. 2005. Thesis title: Computation of atmospheric water vapor by GPS. Mr. A.H. Ghafourian Defended in Jan. 2005. Thesis title: Analysis of errors and achievable accuracies in data gathering, and data processing of hydrography operations. Mr. K. Shojaee. Defended in Jan. 2005. Thesis title: Modeling of effect of non-gravitational forces on instantaneous sea level via fusion of data from different satellite sensors. Mr. R. Sanayei. Defended in December 2005. Thesis title: Validity Control of Sea Gravity Data via Satellite Altimetry Observations. Mr. B. Hazrati-Soumeh. Defended in March 2006. Thesis title: Study of tidal effect on the solid Earth surface by using potential theory. Mr. A. Jafari. Defended in February 2006. Thesis title: Study of the Caspian Sea level variations based on satellite altimetry and costal tide gauge observations Mr. M. Gattabi. Defended in February 2006. Thesis title: Design of a DGPS network at the southern coast of Iran for hydrographic and navigation applications. Mr. M. Delghandi. Defended in July 2006. Thesis title: Ionospheric Refraction Modeling by SARIMA Analysis of Time Series of GPS Permanent Stations. Mr. M. Kashef. Defended in August 2006. Thesis Title: Design of geodetic observations for monitoring geodynamic activities. Mr. M. Nazari. Defended in September 2006. Thesis Title: A Technical Study over the sea boundaries of Iran based on international Law-of-the-Seas and existing protocols. Mr. H. Salimi. Defended in September 2006. Thesis Title: Tidal load effect of Persian Gulf and Oman Sea on the Earth surface and gravity at the tide gauge station and leveling bench marks. Mr. Y. Naimi. Defended in November 2006. Thesis Title: On the comparison of alternative solutions for the 3-D transformation problem with large rotation angles. Mr. M. Jalilnejad. Defended in December 2006. Thesis Title: Assessment of MSL Models and Identification of Current Best MSL Model. Mr. M.J. Toorian. Defended in February 2007. Thesis Title: Ocean tide analysis using Satellite altimetry data and coastal tide gauge Case study: Persian Gulf and Oman Sea. Mr. N. Abdi. Defended in February 2007. Thesis Title: Observations analysis of the permanent GPS stations of the University of Tehran. Mr. S. A. Ghasemi Khalkhali. Defended in February 2007. Thesis Title: On the study of polar motion and Length of Day and their effects on the gravity field and sea surface level. Mr. A. Yousefi. Defended in September 2007. Thesis Title: Computation of the normal height for the precise leveling network of Iran. Mr. M. Torabi. Defended in September 2007. Thesis Title: Thesis title: Point-wise spectral analysis of Topex-Poseidon satellite altimetry observations for Mean Sea Level (MSL) modeling. Mr. A. Salehian. Defended in September 2007. Thesis title: Computation of a global model for Sea Surface Topography (SST). Mr. M. Raoufian. Defended in June 2008. Thesis title: Strain tensor estimation in Iranian geodynamic network. Mr. S.S. Nabavi. Defended in July 2008. Thesis title: Design and implementation of the first Iranian Differential Global Navigation Satellite System (IDGNSS) Mr. A. Hajezadeh-far. Defended in July 2008. Thesis title: Assessment of underwater positioning systems and development of a national underwater positioning system. Mr. A. Gholamali. Defended in December 2008. Thesis title: Towards establishment of a national Precise Ephemeris service via national-wide permanent GPS stations. Mr. A. Gharebaghi. Defended in December 2008. Thesis title: A comprehensive review of the engineering applications of geodesy. > Supervised Ph.D. Students Dr. A. Safari. Defended in Sep. 2004 (with grade “excellent”). Title of the thesis: Ellipsoidal boundary value problem for Geoid computations via gravimetry, astronomical and satellite altimetry observations. Dr. A. Askari. Defended in Mardch 2008. Thesis Title: Application of satellite altimetry to sea-bed geological prospectings. > Graduate Course Teachings Advanced Geometrical Geodesy Geometric Satellite Geodesy Gravimetric Satellite Geodesy Geodetic Reference Systems Geoid and Quasi-Geoid Computations in the Era of GPS. Marine Geodesy Time Series and Theory of Approximation Advanced Adjustment Tide and Tidal Currents Measurement Techniques of Physical Geodesy > Ph.D. Students Under Supervision Mr. H. Hashemi-Farahani. Field of research: Global gravity field modeling using modern satellite gravity missions. Mr. R. Karimi. H. Field of research: Local gravity field modeling and geoid computations. Mr. D. Zamzam. Field of research: Crustal modeling. Mrs. M. Jafari. Thesis title: Dynamic deformation modeling of structures based on geodetic and geotechnical data fusion. Mr. Gh Joodaki. Thesis title: Vertical Crustal Movement Modeling as a solution of Ellipsoidal Gravimetric Boundary Value Problem Mr. V. Nafisi. Thesis title: Strain analysis of dams based on data fusion of the internal and external dam stability sensors. F Sahajeghi. Thesis title: Airborne Vector Gravimetry Using GPS/INS. Mr. S.R. Emadi. Field of research: Geoid computations. > M.Sc. Students Under Supervision Mr. M. Hosseini. Thesis title: Feasibility study about satellite altimetry and satellite gravimetry data fusion for the hydrocarbon prospecting. Mrs. N. Afari. Thesis title: Dam deformation study via fusion of geodetic, and geotechnical data under constraint of seasonal dam’s lake water level variations. Mr. M.H. Rezvani. Thesis title: Detection and calibrations of multi-beam errors. Mr. M. Sheibani. Thesis title: Geometrical improvement of Side Scan Sonars in absolute sense. M. Imani. Thesis title: Space-Time variations of Caspian Sea Level using Satellite Altimetry observations. > Researches on Safety of Structures and Engineering Geodesy 3-D deformation analysis using invariant parameters (together with R. Esmaili) Empirical refraction modeling for electronic distance measuring instruments (together with M. Afsharipoor) 3-D transformation between coordinate systems with large orientation difference angles (together with Y. Naimi) A comprehensive review of the engineering applications of geodesy (together with A. Gharebaghi) > Researches on Satellite Altimetry and Tidal Modeling 4-D time-space modeling of sea surface variations (together with G. Rostami) Computation of Sea Surface Topography in Persian Gulf and Oman Sea (together with M. Moseyebzadeh) Global and local tidal analysis and computation of co-tidal and co-phasal maps via Topex/Poseidon altimetry data (together with H. Hashemi-Farahani) Modeling of effect of non-gravitational forces on instantaneous sea level via fusion of data from different satellite sensors (together with K. Shojaee) Study of the Caspian Sea level variations based on satellite altimetry and costal tide gauge observations (together with A. Jafari) Assessment of global MSL Models (together with M. Jalilnejad) Ocean tide analysis using Satellite altimetry data and coastal tide gauge Case study: Persian Gulf and Oman Sea (together with M.J. Toorian) Point-wise spectral analysis of Topex-Poseidon satellite altimetry observations for Mean Sea Level (MSL) modeling (together with M. Torabi) Computation of a global model for Sea Surface Topography (SST) (together with A. Salehian) > Researches on Heights and Height Datum Adjustment of precise first order leveling network of Iran and computation of geopotential numbers for the whole network (together with R. Karimi) Sea tidal load effect of Persian Gulf and Oman Sea on the Earth surface and gravity at the tide gauge station and leveling bench marks (together with H. Salimi) Computation of the normal height for the precise leveling network of Iran (together with A. Yousefi) > Researches on Hydrography Increasing productivity of hydrographic chart production by incorporating GPS and satellite altimetry data into traditional hydrography operation (together with M. Sohrabi-Athar) Revision of the orthometric height computation formulation from geopotential numbers to improvement its accuracy level (together with S. Jazaeri) Analysis of errors and achievable accuracies in data gathering, and data processing of hydrography operations (together with A.H. Ghafourian) Technical Study over the sea boundaries of Iran based on international Law-of-the-Seas and existing protocols (together with M. Nazari) Assessment of underwater positioning systems and development of a national underwater positioning system (together with A. Hajezadeh-far) > Researches on Marine Gravity Field Modeling Local gravity field modeling at sea areas based on satellite altimetry data (together with R. Arab-Sahebi) A new method for 3-D positioning of subsurface structures for oil exploration (together with M. Shirzaie) Validity Control of Sea Gravity Data via Satellite Altimetry Observations (together with R. Sanayei) Application of satellite altimetry to sea-bed geological prospectings (together with A. Askari) Feasibility study about satellite altimetry and satellite gravimetry data fusion for the hydrocarbon prospecting (together with M. Hosseini) > Researches on Geodynamics Study of tidal effect on the solid Earth surface by using potential theory (together with B. Hazrati-Soumeh) Design of geodetic observations for monitoring geodynamic activities (together with M. Kashef) Tidal load effect of Persian Gulf and Oman Sea on the Earth surface and gravity at the tide gauge station and leveling bench marks (together with H. Salimi) Study of polar motion and Length of Day and their effects on the gravity field and sea surface level (together with S. A. Ghasemi Khalkhali) Crustal modeling (together with D. Zamzam) Strain tensor estimation in Iranian geodynamic network (together with M. Raoufian) > Researches on Local Geoid Computations and Local Gravity Field Modeling Ellipsoidal boundary value problem for Geoid computations via gravimetry, astronomical and satellite altimetry observations (together with A. Safari) Local gravity field modeling and geoid computations (together with R. Karimi) Crustal gravity field modeling (together with D. Zamzam) High-resolution geoid for Iran based on boundary data of the type gravity intensity (together with Y. Hatam, A. Sharifi, A. Safari, K. Ghazavi, M. Motagh) Ellipsoidal terrain modeling (together with A. Safari) > Researches on Global Gravity Field Modeling Global gravity field modeling using modern satellite gravity missions (together with H. Hashemi-Farahani) Geoid potential value and its time variations > Areas of Research GPS Safety of Structures and Engineering Geodesy Satellite Altimetry and Tidal Modeling Heights and Height Datum Hydrography Marine Gravity Field Modeling Geodynamics Local Geoid Computations and Local Gravity Field Modeling Global Gravity Field Modeling > Current Projects Assessment of underwater positioning systems and design of a national underwater positioning system. > Finished Projects Computation of geoid with global details for Iran Computation of the potential value of the geoid and its time variations Computation of high-resolution geoid for Iran based on boundary data of the type gravity intensity Verification of possibility of using GPS in read-time mode for longitudinal profile computation of the railway tracks Ellipsoidal terrain correction Potentially of Ph.D. studies at German universities in various fields of study Establishment of a calibration laboratory for EDM instruments Tidal analysis of the Southern Iranian sea territories and computation of the co-range and co-tide maps for Persian Golf and Oman Sea Analysis of Iranian coastal tide gauge observations and determination of the zero point of the national height datum of Iran Computation of discontinuity layers within the Earth for increasing the efficiency of oil and gas exploration Computation of the high-resolution geoid of Iran based on boundary data of the type gravity intensity and satellite altimetry observations Development of the standard manual for hydrography operations at the dam reservoirs Global gravity field modeling. Development of a software for the design of embankment dams. Development of a calibration laboratory for optical surveying instruments. > Peer Reviewed Journal Papers Grafarend E.W. and Ardalan A. (1997) W0: an estimate in the Finnish height datum N60, epoch 193.4, from twenty-five GPS points of the Baltic Seas Level Project. Journal of Geodes 71: 673-679 Grafarend E. W., Ardalan A. A., and Sideris M.G. (1999) The spheroidal fixed-free two-boundary-value problem for geoid determination (the spheroidal Bruns transformation). Journal of Geodesy 73: 513-533. Grafarend E. W. and Ardalan A. A. (1999) World Geodetic Datum 2000. Journal of Geodesy 73: 611-623. Grafarend E. W. and Ardalan A. A. (1999) The minimal distance mapping of the physical surface of the earth onto the Somigliana-Pizzetti telluroid and the corresponding quasi-geoid, case study: State of Baden-Wuertemberg. Zeitschrift fuer Vermessungswesen 2: 48-60. Ardalan A. A. and Awange J. L. (2000) Compatibility of the NMEA GGA with GPS receivers. Journal of GPS Solutions 3: 1-3. Ardalan A. A. and Grafarend E. W. (2001) Somigliana-Pizzetti gravity: The international gravity formula accurate to the sub-nanoGal level. Journal of Geodesy, 75: 424-437. Ardalan A. A., and Grafarend E. W. (2001) Ellipsoidal geoidal undulations (ellipsoidal Bruns formula) case studies. Journal of Geodesy, 75: 544-552. Ardalan A. A., Grafarend E. W. and Kakkuri J. (2002) National height datum, the Gauss-Listing geoid level value W0 and its time variation W0(dot). Journal of Geodesy, 76: 1-28. Ardalan A. A. Grafarend E. W., and Ihde J. (2002) Molodensky Potential-Telluroid based on a Minimum-Distance Map ? Case study: quasi-geoid of East Germany in World Geodetic Datum 2000. Journal of Geodesy, 76: 127-138. Ardalan A. A. and Grafarend E. W. (2002): High Resolution Regional Geoid Computation. In: M.G. Sideris (Ed.): Gravity, Geoid and Geodynamics 2000. International Association of Geodesy Symposia 123 (2002) 301-310 Grafarend E. W. and Ardalan A. A. (2002) Time evolution of a World Geodetic Datum. In: F. Sanso, Vista for Geodesy in the New Millennium. Springer-Verlag Berlin Heidelberg New York, 2002. Ardalan A. A. and Mosaiebzadeh M. (2003) Computation of Sea Surface Topography of Persian Gulf and Oman Sea via GPS and tide gauge observations. Journal of Faculty of Engineering of University of Tehran 37: 177-188 (in Persian). Grafarend E. W., Ardalan A. A., and Sideris M. (2003) The spheroidal fixed-free two-boundary value problem for geoid determination (the spheroidal Bruns transform). In E. Grafarend, F. Krumm and V. Schwarze, Geodesy the challenge of the 3rd millennium. Springer-Verlag Berlin Heidelberg, 2003. Ardalan A. A., Grafarend E. W. and Kakkuri J. (2003) National height datum, the gauss-listing geoid level value and its time variation (Baltic sea level project: Epoch 1990.8, 1993.8, 1997.4). In E. Grafarend, F. Krumm and V. Schwarze, Geodesy the challenge of the 3rd millennium. Springer-Verlag Berlin Heidelberg, 2003. Ardalan A. A. and Awange J. (2003) Care while using NMEA 0183. In E. Grafarend, F. Krumm and V. Schwarze, Geodesy the challenge of the 3rd millennium. Springer-Verlag Berlin Heidelberg, 2003. Ardalan A. A. (2003) Somigliana-Pizzetti minimum distance telluroid mapping. In E. Grafarend, F. Krumm and V. Schwarze, Geodesy the challenge of the 3rd millennium. Springer-Verlag Berlin Heidelberg, 2003. Ardalan A. A., Grafarend E.W. (2004) High-resolution regional geoid computation without applying Stokes’s formula: a case study of the Iranian geoid. Journal of Geodesy, 78: 138-156. Ardalan A. A., Safari A. (2004) Ellipsoidal terrain correction based on multi-cylindrical equal-area map projection of the reference ellipsoid. Journal of Geodesy, 78: 114-123. Parmehr E. G., Ardalan A. A., and Hashemi L. (2004) Implementation of Height Information for Modification of Delaunay Triangulation. Journal of Geospatial Engineering, 6: 43-48. Ardalan A. A. and Baes M. (2005) Ionospheric modeling based on 3-D coordinates and position vector. Journal of Faculty of Engineering, 38: 823-830. Ardalan A. A. and Jafari M. (2005) On the possibility of DTM generation using satellite altimetry data of Topex-Poseidon over the land areas. Journal of Faculty of Engineering, 38: 831-840. Safari A. and Ardalan A. A. (2005) Local geoid computations based on boundary data of the type gravity intensity and satellite altimetry, case study: High-resolution geoid of Iran. Journal of Faculty of Engineering, 38: 841-853. Ardalan A. A. and Karimi R. (2005) Local gravity field modeling along precise leveling lines for reducing spacing of gravity observations, case study: gravity field modeling along the first order leveling network of Iran. Journal of Faculty of Engineering, 38: 853-860. Safari A., Ardalan A. A., Grafarend E.W. (2005) A new ellipsoidal gravimetric, satellite altimetry and astronomic boundary value problem, a case study: The geoid of Iran. Journal of Geodynamics, 39: 545-568 Ardalan A. and Safari A. (2005) Global height datum unification: a new approach in gravity space.Journal of Geodesy, 79: 512 - 523 Ardalan A. A. and Arab-Sahebi R. (2005) Local gravity field modeling at the sea area via satellite altimetry observations; case study: Local gravity field of Geshm Island. Journal of Faculty of Eng., 39: 633-644 Ardalan A. A. and Mosaibzadeh M. (2005) Using total-stations without leveling and centering. Journal of Faculty of Eng., 39: 645-651. Ardalan A. A. and Hashemi-Frahani H. (2005) Computation of astronomical coordinates via combination of GPS and total-station observations. Journal of Faculty of Eng., 39: 645-660. Ardalan A. A. and Safari A.R. (2005) A method for computation of zero points of height sysytems with respect to geoid. Journal of the Earth and Space Physics, 31: 1-12. Ardalan A. A. and Jazaeri S.Sh. (2005) A method for computation of mean gravity inside the Earth for increasing accuracy of orthometric height computations. Journal of the Earth and Space Physics, 31: 35-44. Grafarend E.W., Finn G., Ardalan A.A. (2006) Ellipsoidal Vertical Deflections and Ellipsoidal Gravity Disturbance: Case Studies. Studia Geophysica Et Geodaetica, 50: 1-58. Ardalan A. A., Silavi T. (2006) New estimations for the radius of geo-stationary satellite orbits based on spherical and ellipsoidal gravitational models. Journal of the Earth and Space Physics, 32: 59-68. Ardalan A. A., Safari A., Jamour Y. (2006) A comparative study of the recent geopotential models for synthesizing different gravity functionals at the geographical region of Iran. Journal of the Earth and Space Physics, 32: 107-116. Ardalan A. A., Hashemi-Farahani H. (2007) A new global ocean tide analysis and computation of Mean Sea Level model based on orthonormal base functions using 11 years of Topex/Poseidon satellite altimetry observations. Journal of University College of Engineering, University of Tehran, 40: 1031-1019. Ardalan A. A., Sohrabi-Athar M. (2007) A Proposal for the Computation of the Precise Hydrographic Charts by Using 3-D GPS. Journal of University College of Engineering, University of Tehran, 40: 1011-1017. Safari A., Ardalan A. A. (2007) New Cylindrical Equal Area and Conformal Map Projections of the Reference Ellipsoid for Local Applications. Survey Review 39: 132-144. Ardalan A. A., Hashemi-Farahani H. (2007) A harmonic approach to global ocean tide analysis based on TOPEX/Poseidon satellite. Journal of Mar Geophys Res, 28: 235-255. Ardalan A. A., Jafari A. (2007) Assessment of 13 years of sea level variations at the Caspian Sea using satellite altimetry observations. Journal of the Earth and Space Physics, 33: 21-30. Ardalan A. A., Safari A., Jomegi A. (2007) On the effect of Digital Terrain Model on the geoid computation methodology without applying Stock’s formula. Journal of the Earth and Space Physics, 33: 85-105. Ardalan A.A., Safari A., and Salmi H. (2007) On the indirect tidal effect on the gravity field and geometry of the crust at the coastal areas. Journal of the Earth & Space Physics. 33: 1-20. Ardalan A. A., Safari A., Jomegi A. (2007) Geoid determination based on boundary values of the type modulus of gravity vector, satellite altimetry and GPS/Leveling data. Nasir Journal of Science and Engineering, 2: 23-43. Ardalan A. A. , Hashemi-Farahani H. (2008) Sensitivity analysis of the GRACE in single satellite mode. Journal of Earth and Space Physics, 33: 19-34. Salavatizadeh M.R., Ardalan A.A. (2008) Application of cross-spectral analysis to computations of sea surface topography case study: Persian Gulf. Journal of the Earth & Space Physics. 34: 63-76. Ardalan A. A., Jafari M. (2008) Tropospheric Error Modeling for GPS Positioning. Journal of University College of Engineering, University of Tehran, 42: 269-278. Ardalan A. A., Hashemi-Farahani H. (2008) Global Estimote of Geoid Potential, SST and Marine Geoid Based on Satellite Altimetry Data. Journal of University College of Engineering, University of Tehran, 42: 279-286. Ardalan A. A., Safari A., Allahtavakoli Y (2008) On the optimum method for estimation of regularization parameter of downward continuation in the problem of geoid computation without Stokes formula. Journal of Earth and Space Physics, 34: 57-78. Ardalan A. A., Safari A. (2008) A methodology for combination of GPS/Leveling geoid as boundary data with the gravity boundary data within a gravimetric boundary value problem. Journal of Earth and Space Physics, 34: 79-92. > Contributions to the International Conferences Since 1996 A. Ardalan (1996) A new challenging method for computation of geopotential value . 4th International Conference on Civil Engineering. Sharif University of Technology, Tehran/Iran May 4-6, 1997. A. Ardalan and E.W. Grafarend (1999) World Geodetic Datum 2000. Mathematical Methods of Geodesy, MATHEMATISCHES FORSCHUNGSINSTITUT OBERWOLFACH, 28 March - 3 April, Oberwolfach, Germany. A. Ardalan, E.W. Grafarend, M.G. Sideris (1999) The spheroidal Stokes boundary value problem. IV Hotine-Marussi Symposium on Mathematical Geodesy. Trento/Italy September 14-17, 1998. E.W. Grafarend, and A. Ardalan (1999) World Geodetic Datum 2000. in: R. Rummel (ed.), Towards an integrated global geodetic observation system, Munich 5-9 October 1998 A. Ardalan (1999) Somogliana-Pizzetti minimum distance telluroid mapping. In: Krumm, F. and Schwarze, V.S. (eds.): Quo vadis geodesia ...?, Festschrift for E.W. Grafarend on the occasion of his 60th birthday. Technical Reports of the Dept. of Geodesy and Geoinformatics, Univ. of Stuttgart, Part 1, pp. 27-40. A. Ardalan and J. Awange (1999) Care while using the NMEA 0183! In: Krumm and V. S. Schwarze (Eds.): Quo vadis geodesia...? Festschrift for Erik W. Grafarend on the occasion of his 60th birthday. Technical Report Department of Geodesy and GeoInformatics, 1999.6. A. Ardalan and E.W. Grafarend (1999) A first test for the time variation of based on three GPS campaigns of the Baltic Sea Level Project. Reports of Finnish Geodetic Institute 99:4. A. Ardalan and E.W. Grafarend (2000) Global geoid computation as a solution of the implicit function theorem: the spheroidal Bruns formula. Geophysical Research Abstracts Volume 2, G3.02, The Earth gravity field (joint EGS/AGU Nice/France 25-29 April 2000): Geoid use in engineering, geophysical and oceanographic applications, page 115. E.W. Grafarend and A. Ardalan (2000) The minimal distance mapping of the physical surface of the Earth onto the Somigliana-Pizzetti telluroid and the corresponding quasi-geoid, case study: eastern part of Germany. Geophysical Research Abstracts Volume 2, G3.02, The Earth gravity field (joint EGS/AGU Nice/France 25-29 April 2000): Geoid use in engineering, geophysical and oceanographic applications, page 119. A. Ardalan and E.W. Grafarend (2000) High Resolution Regional Geoid/Quasi-Geoid Computation. Gravity, Geoid and Geodynamics 2000, Banff Alberta, Canada, July 31-August 2000. E.W. Grafarend and A. Ardalan (2000) National Height Datum, the Gauss-Listing Geoid Level Value and Its Time Variation. Gravity, Geoid and Geodynamics 2000, Banff Alberta, Canada, July 31-August 2000. A. Ardalan and E.W. Grafarend (2000) High Resolution Regional Geoid Computation in the World Geodetic Datum 2000, based upon collocation of linearized observational functionals of the type GPS, gravity potential and gravity intensity. Geodetic week 2000, 10-12 October 2000, Potsdam, Germany. A. Ardalan and E.W. Grafarend (2000) Towards a Spheroidal Gravitational Earth Model (SEGM 2000) Spheroidal Harmonic Analysis on the International Reference Ellipsoid. Geodetic week 2000, 10-12 October 2000, Potsdam, Germany. E.W. Grafarend, A. Ardalan, and J. Kakkuri (2001) The gauge value Wo of the Gauss-listing geoid and its time variation Wo: first estimates from the International Baltic Sea Level Project. Geopysical Research Abstracts, Volume 3, 2001, 26th General Assembly, Nice, France, 25 - 30 March 2001 A. Ardalan, and E.W. Grafarend (2001) Towards a Spheroidal Gravitational Earth Model (SEGM 2000). Spheroidal harmonic analysis on the international reference ellipsoid. Geopysical Research Abstracts, Volume 3, 2001, 26th General Assembly, Nice, France, 25 - 30 March 2001. A. Ardalan, and E.W. Grafarend (2001) The radius of the Bjerhammar sphere semi-major axes of the Somigliana-Pizzetti level ellipsoid and the spherical/ellipsoidal Bruns formula (implicit function theorem). Geopysical Research Abstracts, Volume 3, 2001, 26th General Assembly, Nice, France, 25 - 30 March 2001. E.W. Grafarend, and A. Ardalan (2001) The international gravity formula - accurate to the sub-nanogal level. Geopysical Research Abstracts, Volume 3, 2001, 26th General Assembly, Nice, France, 25 - 30 March 2001. E.W. Grafarend, and A. Ardalan (2001) Multiresolution analysis of the geoid based upon a GPS collocation solution of data of type (i) gravity potential,(ii) gravity intensity and (iii) vertical deflections. Geopysical Research Abstracts, Volume 3, 2001, 26th General Assembly, Nice, France, 25 - 30 March 2001. A. Ardalan (2001) Ellipsoidal geoidal undulations(ellipsoidal Bruns Formula) case studies. 3rd of April 2001, Geod?tisches Oberseminar (Geodetic Advance Seminar), Geodetic Institute, University of Stuttgart. A. Ardalan (2001) Ellipsoidal Molodensky telluroid mapping (generalised Bruns formula) Case study: Quasi-Geoid of East Germany. 5th of April 2001, Geod?tisches Oberseminar (Geodetic Advance Seminar), Geodetic Institut, University of Stuttgart. E.W. Grafarend, A. Ardalan, and J. Kakkuri (2001) The gauge value of the Gauss-listing geoid and its time variation : first estimates from the International Baltic Sea Level Project. IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. E.W. Grafarend, and A. Ardalan (2001) Time evolution of a World Geodetic Datum. IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. E.W. Grafarend, and A. Ardalan (2001) Multiresolution analysis of the geoid based upon a GPS collocation solution of data of type (i) gravity potential,(ii) gravity intensity and (iii) vertical deflections. IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. A. Ardalan and E.W. Grafarend (2001) Spheroidal harmonic analysis to degree/order 1000/1000 in the World Geodetic Datum 2000. IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. E.W. Grafarend, and A. Ardalan (2001) Somigliana-Pizzetti gravity - The International Gravity Formula- Accurate to the Sub-nanoGal level. IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. A. Ardalan, and E.W. Grafarend (2001) A new estimate of the time derivative of the geoid gauge IAG Scientific Assembly, Budapest/Hungary, 2-7 September 2001. A. Ardalan, and E.W. Grafarend E. (2001) Minimaldistanzabbildung der physischen Erdoberfl?che auf das Molodensky-Telluroid / Quasi-Geoid in Bezug auf ein Somigliana-Pizzetti-Referenzfeld: Fallstudie Baden-W?berg. Geodetic Week, 18th ? 21st September 2001 K?ln/Germany. A. Ardalan, and E.W. Grafarend (2001) (Invited paper) Analytical representation of potential field anomalies for Europe (AROPA Workshop). Institute d?Europe, Castle of M?h, Luxemburg 23-27 October 2001. G. Finn, A. Ardalan and E. Grafarend (2002) The modeling of the ellipsoidal gravitational terrain effect. Case study: Ellipsoidal vertical deflections. Geophysical Research Abstracts 4. 27th General assembly of the European Geophysical Society. Nice, France 2002. E. Grafarend, A. Ardalan and G. Finn (2002) Ellipsoidal vertical deflection. Global and regional modeling of horizontal derivative of the terrestrial gravity field. Geophysical Research Abstracts 4. 27th General assembly of the European Geophysical Society. Nice, France 2002. A. Ardalan and E. Grafarend (2002) From free-air and Bouguer anomalies to EGM / SEGEN gravity anomalies: Test computations of ellipsoidal harmonic gravity disturbances. Geophysical Research Abstracts 4. 27th General assembly of the European Geophysical Society. Nice, France 2002. A. Ardalan and E. Grafarend (2002) Ellipsoidal harmonic gravity disturbances. Regional, continental, global maps of the vertical derivative of the incremental gravity potential. Annual Conference of International Association of Mathematical Geography. Berlin, Germany, 2002. G. Finn and A. Ardalan (2002) Ellipsoidal harmonic vertical deflections. Regional, continental, global maps of the horizontal derivative of the incremental gravity potential. Annual Conference of International Association of Mathematical Geography. Berlin, Germany, 2002. E. Grafarend and A. Ardalan (2002) Gravity ellipsoidal versus potential ellipsoidal geoid. Case studies of regional geoid. Annual Conference of International Association of Mathematical Geography. Berlin, Germany, 2002. A. Ardalan and E. Grafarend (2002) Time evolution of a World Geodetic Datum. In: S. Sadegian and S Haji-Karimi, Geomatics 81, NCC, Tehran, Iran, 2002. A. Ardalan (2002) Equal area map projection of the reference ellipsoid as a means for deriving ellipsoidal terrain correction based on polar approximation. Seminars of the Geomatics Engineering Scientific Society of Iran, NGO, Tehran, Iran 2002. A. Ardalan (2002) An operational method for connecting GPS coordinates to total station coordinates. Seminars of the Geomatics Engineering Scientific Society of Iran, NGO, Tehran, Iran 2002. A. Ardalan (2002) Special ellipsoidal gravity earth normal (SEGEN) program. Case studies: Ellipsoidal harmonic gravity disturbances, regional, continental, global maps of the vertical derivative of the incremental gravity potential. NCC scientific seminars. Tehran, Iran September 2002. A. Ardalan (2003) A new ellipsoidal gravimetric satellite altimetry boundary value problem. Case study: High-resolution geoid of Iran. Invited paper. Geod?tisches Obersemiar. University of Stuttgart, Stuttgart, Germany April 3, 2003. A. Ardalan and K. Shojaee (2003) Tide analysis via application of auto-covariance function. Case study: Tidal analysis of the tide gauge stations of Persian Gulf and Oman Sea (1991-2002). Geophysical Research Abstracts 5: 09892. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan and A. Safari (2003) Computations of sea surface topography in the potential space vs. geometry space. Case studies. Geophysical Research Abstracts 5: 09857. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan, M. Shirzaii and R. Karimi (2003) On the robust spectral analysis. Case studies: Tropospheric modeling of the GPS data and Mean Sea Level computation from tide gauge data. Geophysical Research Abstracts 5: 09775. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan, A. Safari and E. Grafarend (2003) Terrain correction on the moving equal area cylindrical map projection of the surface of a reference ellipsoid. Geophysical Research Abstracts 5: 06329. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan and M. Jafari (2003) Local time-wise tropospheric modeling of GPS observations. Case studies. Geophysical Research Abstracts 5: 09715. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan and E. Grafarend (2003) High-resolution geoid computation without applying Stokes formula. Case study: High?resolution geoid of Iran. Geophysical Research Abstracts 5: 09190. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan, A. Safari and E. Grafarend (2003) A new ellipsoidal gravimetric-satellite altimetry boundary value problem. Case study: High-resolution geoid of Iran. Geophysical Research Abstracts 5: 04055. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan, M. Shirzaii and R. Karimi (2003) A method for precise estimation of the volume of oil resource via application of first and second derivation of wavelet transformation. Case study: Determination of volume of oil reservoirs in the southern part of Iran. Geophysical Research Abstracts 5: 09592. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. A. Ardalan and R. Esmaeili (2003) 3-D deformation analysis via invariant geodetic observations. Geophysical Research Abstracts 5: 09615. EGS-EGU-EUG Joint Assembly Nice, France, April 2003. K. Shojaii and A. Ardalan (2003) Tide Analysis via application of auto-covariance function. Case study: tidal analysis of the tide gauge stations of Persian Gulf and Oman Sea (1991-2002). 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Safari and A. Ardalan (2003) Computation of Sea Surface Topography in the potential space vs. the geometry space. Case studies. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Ardalan, A. Safari, and E. Grafarend (2003) High-resolution gravimetric satellite altimetry geoid computations based on ellipsoidal fixed-free two-boundary value problem. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. G. Finn, E. Grafarend and A. Ardalan (2003) Data fusion for high-resolution geoid determination. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Safari, A. Ardalan, E. Grafarend (2003) High-resolution geoid computation without applying Stokes formula. Case study: High-resolution geoid of Iran. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Ardalan (2003) 3-D deformation analysis via invariant geodetic observations. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. M. Shirzaii, M. Jafari, and A. Ardalan (2003) Tropospheric modeling via GPS observations. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Ardalan, A. Safari and E. Grafarend (2003) Terrain correction on the moving equal area cylindrical map projection of the surface of reference ellipsoid. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Safari and A. Ardalan (2003) Validity control of the sea gravity data. Case studies. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. R. Karimi, A. Ardalan and F. Tavakkoli (2003) National report on the status of the re-computation of precise leveling of Iran. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. M. Shirzaii, A. Ardalan and R. Karimi (2003) A method for precise estimation of the volume of oil resources via application of first and second derivatives of wavelet transformation. Case study: Determination of volume of oil reservoirs in the Southern part of Iran. 23rd General Assembly of the International Union of Geodesy and Geophysics. June 30- July 11, 2003 Sapporo, Japan. A. Ardalan and M. Sohrabi (2004) Removal of tidal effect on the hydrographic depth sounding without costal tide gauge observation. An application of satellite altimetry in precise off shore hydrography. Case study: Application of 11 years of Topex-Poseidon satellite altimetry data. Geophysical Research Abstracts 6: 01075. European Geosciences Union 2004. A. Ardalan and M. Shirzaii (2004) Very localized gravity field modeling based on locally tuned spherical harmonics. Geophysical Research Abstracts 6: 01166. European Geosciences Union 2004. A. Ardalan and M. Afsharipoor (2004) Regional modeling of refraction error for electronic distance measurement. Geophysical Research Abstracts 6: 00736. European Geosciences Union 2004. R. Karimi and A. Ardalan (2004) Processing of the observations of precise leveling network of Iran and computations of geopotential numbers for the whole network. Geophysical Research Abstracts 6: 01074. European Geosciences Union 2004. A. Safari and A. Ardalan (2004) On the solution existence of downward continuation problem in ellipsoidal geoid computation without applying Stokes formula. Geophysical Research Abstracts 6: 01071. European Geosciences Union 2004. A. Ardalan and A. Safari (2004) On the computation of terrain correction in geoid computations without using Stokes formula. Geophysical Research Abstracts 6: 01072. European Geosciences Union 2004. M. Shirzaii and A. Ardalan (2004) Multiscale edge analysis as a tool for oil exploration via gravity observation. Geophysical Research Abstracts 6: 00664. European Geosciences Union 2004. A. Ardalan and R. Karimi (2004) Local gravity field modeling along the precise leveling lines as a way to reduce the need to gravity observations. Case study: Modeling of gravity field along the first order leveling line of Iran. Geophysical Research Abstracts 6: 01073. European Geosciences Union 2004. A. Safari, A. Ardalan, E. Grafarend (2004) High-resolution geoid computations without applying of Stokes’s formula, based on gravimetric, satellite altimetry, astronomic boundary observables. Case study: geoid of Iran. Geophysical Research Abstracts 6: 00763. European Geosciences Union 2004. A. Ardalan (2004) Global height datum unification. A new concept. Geophysical Research Abstracts 6: 05804. European Geosciences Union 2004. M. Shirzaii and A. Ardalan (2004) Frequency domain separation of gravity field crustal layers by 2-D wavelet analysis of surface gravity field observations for oil exploration. Geophysical Research Abstracts 6: 00714. European Geosciences Union 2004. A. Ardalan and H. Hashemi (2004) Estimation of time variations of gravity potential value of geoid W0 based on 11 years of Topex-Poseidon satellite altimetry data. Geophysical Research Abstracts 6: 00691. European Geosciences Union 2004. A. Ardalan and A. Safari (2004) Ellipsoidal terrain correction based on multi-cylindrical equal area map projection of the reference ellipsoid. Geophysical Research Abstracts 6: 00772. European Geosciences Union 2004. A. Ardalan and H. Hashemi (2004) Computation of direction of local gravity field vector by combining GPS coordinates with theodolite observations. Geophysical Research Abstracts 6: 01077. European Geosciences Union 2004. M. Jafari and A. Ardalan (2004) A proposal for modeling tropospheric effect on Galileo observations. Geophysical Research Abstracts 6: 04876. European Geosciences Union 2004. H. Hashemi and A. Ardalan (2004) A new model for global ocean tide based on spherical harmonics and 11 years of Topex/Poseidon satellite altimetry data. Geophysical Research Abstracts 6: 00645. European Geosciences Union 2004. H. Hashemi and A. Ardalan (2004) A new model for global ocean tide based on orthonormalized base functions and 11 years of Topex/Poseidon satellite altimetry data. Geophysical Research Abstracts 6: 00649. European Geosciences Union 2004. A. Ardalan and H. Hashemi (2004) A new estimate for gravity potential value of geoid W0, SST, and global geoid based on 11 years of Topex/Poseidon satellite altimetry data. Geophysical Research Abstracts 6: 00663. European Geosciences Union 2004. A. Ardalan and B. Shoorche (2004) National report on the status of GPS meteorology in Iran. EMS Annual Meeting Abstracts, 1: 00424. European Meteorological Society, Nice France 2004. Ardalan, A.; Jazaeri, S. (2005) A new methodology for the computations of the mean gravity within the Earth?s topography for precise orthometric height determination. Geophysical Research Abstracts, 7: 10488, 2005. European Geosciences Union 2005. Shojaee, K.; Ardalan, A. (2005) Determination of the non-conservative forces on the mean sea level by using satellite altimetry data case study: determination of the effect of non-conservative forces on the persian pulf and oman sea based on topex/poseidon satellite altimetry data for the duration 1992-2001. Geophysical Research Abstracts, 7: 00669, European Geosciences Union 2005. A. Ardalan, and H. Hashemi (2005) Global estimation of gravity potential value of geoid, Sea Surface Topography, and the geoid based on 11 years of Topex-Poseidon satellite altimetry data. Geophysical Research Abstracts, 7: 00821, European Geosciences Union 2005. A. Ardalan, and R. Sahebi (2005) Local gravity field modeling at the sea areas based on satellite altimetry data; case study: Local gravity field modeling at the Qeshm Iceland. Geophysical Research Abstracts, 7: 10489, European Geosciences Union 2005. A. Ardalan, and T. Silavi (2005) New estimations for the radius of Geo-stationary satellite orbit based on spherical and ellipsoidal models. Geophysical Research Abstracts, 7: 10495, European Geosciences Union 2005. A. Ardalan, and R. Karimi (2005) Gravity field modeling along the leveling lines. Geophysical Research Abstracts, 7: 00187, European Geosciences Union 2005. M. Shirzaii, and A. Ardalan (2005) Gravity tomography for determination of the location and extent of interior structures of the Earth via wavelet transforms, Case study: gravity tomographic map of the oil reservoirs. Geophysical Research Abstracts, 7: 00678, European Geosciences Union 2005. A. Ardalan, and A. Safari, A. (2005) Analytical study of the Bjerhammar sphere. Geophysical Research Abstracts, 7: 00776, European Geosciences Union 2005. A. Safari, and A. Ardalan (2005) Downward continuation problem in geoid computation without applying Stokes formula. Geophysical Research Abstracts, 7:00813, European Geosciences Union 2005. A. Ardalan, and M. Jafari (2005) On the possibility of DTM densification by using satellite altimetry data over the land areas; Case study: Densification of Iran DTM by using Topex-Poseidon satellite altimetry data. Geophysical Research Abstracts, 7: 03903, European Geosciences Union 2005. A. Ardalan, and A. Safari (2005) Level sets, implicit function theorem, and their application in gravity field modelling (spherical and ellipsoidal examples). Geophysical Research Abstracts, 7: 00785, European Geosciences Union 2005. A. Safari, and A. Ardalan (2005) On the accurate computations of sea surface topography; case study: SST of Persian Gulf and Oman Sea. Geophysical Research Abstracts, 7: 10562, European Geosciences Union 2005. A. Safari, and A. Ardalan (2005) Two cylindrical of the types equiareal and conformal map projections of the reference ellipsoid for the local applications. Geophysical Research Abstracts, 7: 10564, European Geosciences Union 2005. A. Ardalan, and A. Safari (2005) Global height datum unification based on potential theory. Geophysical Research Abstracts, 7: 00681, European Geosciences Union 2005. A. Ardalan, and B. Shoorcheh (2005) An attempt towards using permanent GPS stations as a tool for atmospheric water vapor tomography; case studies GPS meteorology in Iran. Geophysical Research Abstracts, 7: 00742, European Geosciences Union 2005. A. Ardalan and M. Gatabi (2005) Design of a multipurpose DGPS network at the Persian Gulf and Oman Sea border of Iran for hydrography, navigation, and exploration applications. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan and A Safari (2005) Gravity field determination from combination of the terrestrial, satellite, and airborne gravimetry as well as satellite altimetry observations and astronomical longitude and latitude. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan and A. Safari (2005) A new ellipsoidal boundary value problem for geoid computation with airborne gravimetry data in combination with all types of gravity observables. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) An experience for region-wide computation of water vapor pressure of the atmosphere by GPS observations of a multipurpose DGPS network at the Persian Gulf and Oman Sea border of Iran for hydrography, navigation, and exploration applications. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) Proposal for establishment of a World GPS Atmospheric Center. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan and K. Shojaee (2005) Modeling non-tidal sea level variations via fusion of the data coming from different satellite altimetry sensors. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) A proposal for gravity field modeling at the sea areas via satellite altimetry observations. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan and A. Safari (2005) A new estimate for the radius of the mean Earth sphere. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) A proposal for global height datum unification. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) A new global estimate of the geoid’s potential value from the long term satellite altimetry observations and application of high resolution geopotential models. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. A. Ardalan (2005) A new methodology for high accuracy orthometric height computations. Dynamic Planet 2005. Joint Assembly of IAG, IAPSO, and IABO. Cairns, Australia August 22-26. Grafarend E.W., Ardalan A.A., and Finn G. (2005) Ellipsoidal Vertical Deflections and Ellipsoidal Gravity Disturbances: Case Studies. Geodetic Week, Duesseldorf, Germany, 4-6 Oktober 2005. Ardalan, A.; Hazrati, B. (2006) Analytical computation of tidal deformation on the solid Earth. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10086, 2006. Ardalan, A.A.; Karimi, R. (2006) On the application of FFT and Wavelet Transform in gravity field modeling (solicited paper). European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 09990, 2006. Safari, A.; Ardalan, A.A.; Poutanen, M.; Bilker-Koivula, M. (2006) A proposal for combination of GPS/Leveling data in the gravimetric geoid computation Case study: Test area Southwest of Finland. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 09985, 2006. Ardalan, A.; Grafarend, E.W. (2006) On the geodetic fundamental parameters and the definition of the reference ellipsoid. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10080, 2006. Ardalan, A. ; Safari, A. ; Hashemi-Farahani, H. (2006) An attempt to find the current best estimate of geoid’s potential value $W_0 $ from global mean sea level and geopotential models. European Geosciences Union 2006. Ardalan, A.; Safari, A.; Poutanen, M.; Bilker-Koivula, M. (2006) Verification of new geopotential models at a test area in Finland. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10078, 2006. Ardalan, A.A.; Karimi, R. (2006) Comparison between various existing techniques for computation of geopotential coefficients. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 04377, 2006. Ardalan, A.A.; Safari, A.; Poutanen, M.; Bilker-Koivula, M. (2006) Geoid computation without application of Stokes formula based on very localized gravity data of heterogeneous types Case study: Finland test area. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10022, 2006. Safari, A.; Ardalan, A.; Allahtovakoli, Y. (2006) On determination of regularization parameter in Geoid computations without applying Stokes formula. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10079, 2006. Ardalan, A.; Gatabi, M. (2006) On the weighted constraint design of DGPS reference stations for hydrography and navigation applications. European Geosciences Union 2006. Geophysical Research Abstracts, Vol. 8, 10096, 2006. Ardalan, A.; Safari, A.; Allahtavakoli Y. (2006) The Solution of the Optimum Regularization Parameter for Downward Continuation Based on Abel-Poisson Integral. 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan, A.; Karimi, R. (2006) Precise Quasi-Geoid Map Of Iran Based On Minimum-Distance Molodensky Telluroid Mapping. 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan, A. A., Safari, A. (2006) Global Height Datum Unification; Current Possibilities And Needs. 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan, A. A., Grafarend, E. W. (2006) Geodetic Fundamental Parameters; Which Sets To Be Used? 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan, A. A.; Safari, A.; Jomegi, A., Tabatabaei, S. H.(2006) On The Effect Of Different Components Of The Geoid Computation Based On Method Proposed By Ardalan And Grafarend. 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan A.A., Kashef M. (2006) Selection Of Geodetic Observations According To Type Of Faults. 1st International Symposium of the International Gravity Field Service. August 28-September 01, 2006, Istanbul/Turkey. Ardalan A.A., Safari A., Allahtavakoli Y. (2006) On the optimum choices of estimation of regularization parameter for downward continuation problem of geoid computation without applying Stokes formula. VI Hotine-Marussi Symposium of Theroretical and Computational Geodesy: Challenge and Role of Modern Geodesy. 29 May-2 June 2006. Wuhan, China. Ardalan A.A., Safari A., Jomegi A. (2006) How to compute geoid based on irregularly distributed gravity data on the Surface of the Earth with gaps? VI Hotine-Marussi Symposium of Theroretical and Computational Geodesy: Challenge and Role of Modern Geodesy. 29 May-2 June 2006. Wuhan, China. Ardalan A.A., Salimi H. (2006) Computation of indirect effect of sea tide on the earth crust and gravity field at southern coast of Iran. XXIII FIG Congress, October 8-13, 2006, Munich, Germany. Ardalan A.A., Nazari M. (2006) Maritime Delimitation of Countries with Opposite or Adjacent Sea Boarders. XXIII FIG Congress, October 8-13, 2006, Munich, Germany. Ardalan A.A., Nazari M. (2006) The Effect of Plumb Line Curvature on the Vertical Deflection Components. XXIII FIG Congress, October 8-13, 2006, Munich, Germany. Ardalan A. A., Delghandi M. (2006) Local Ionospheric Modeling Based on GPS Observations at the Permanent GPS Stations. XXIII FIG Congress, October 8-13, 2006, Munich, Germany. Ardalan A. A., Kashef M. (2006) On the optimum design geodetic of observations near the faults as earthquake precursors. Map Asia 2006. August 29-September 1, 2006, Bangkok, Thailand. Ardalan A. A. Kashef M. (2006) Optimization of the geodetic observations for the monitoring of tectonic movements. The 1st Conference on Geospatial Information Technology and Disaster Management, May 8, 2006, Tehran, Iran. Ardalan, A.A.; Jafari, M. (2007) Application of Least Square Spectral Analysis for Estimation of Precise Coordinates of Permanent GPS Station and Modeling Systematic Effects: A Practical Contribution to Nonlinear Time Series Analysis in Geodesy. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 02549, 2007. Ardalan, A. A.; Safari, A.; Hashemi, H. (2007) On the optimum way to estimate geoid’s gravity potential value at the era of altimetry satellites. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 05291, 2007. Ardalan, A.A.; Safari, A.; Jomegi, A. (2007) Comparison of recent geopotential models for synthesizing modulus of gravity vector. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 07080. Ardalan, A.A.; Safari, A.; Jomegi, A. (2007) Modeling of modulus of gravity vector in the oceans based on satellite altimetry data. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 07102. Ardalan, A.A.; Safari, A.; Jomegi, A. (2007) The effect of digital terrain model resolution in geoid computations without applying Stokes formula. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 07165. Safari, A.; Ardalan, A.A.; Jomegi, A. (2007) The effect of anomalous density of crust in geoid computations without applying Stokes formula. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 07226. Grafarend, E. W.; Finn, G.; Ardalan, A. A. (2007) Ellipsoidal Vertical Deflections based on the Somigliana-Pizzetti Ellipsoidal Reference Gravity Field. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 07514. Ardalan, A. A.; Safari, A.; Hashemi, H. ; Jalilnejad, M. (2007) How to build a consistent reference system for geodesy and geodynamics. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 08882. Ardalan, A.A.; Safari, A.; Jomegi, A. (2007) Geoid determination based on boundary values of the type modulus of gravity vector, satellite altimetry and GPS/leveling data. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 09315. Safari, A.; Ardalan, A.A.; Jomegi, A. (2007) Variance components estimation in geoid computations based on heterogeneous boundary values. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 09364. Ardalan, A. A.; Joodaki, Gh. (2007) On the modeling of eigen-multipath behavior of permanent GPS stations. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 05373. Ardalan, A. A.; Shoorcheh, B. (2007) An experiment with monthly and seasonal variability of Water Vapor by the use of GPS observations at the permanent GPS station in Iran (Tehran-2005). EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 11037. Ardalan, A. A.; Abdi, N. (2007) Permanent GNSS stations, valuable source of information for geosciences. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 11061. Safari, A.; Ardalan, A.A.; Allahtavakoli, Y. (2007) On the optimum choices of estimation of regularization parameter for downward continuation problem of geoid computation without applying Stokes formula. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 02472. Ardalan, A. A.; Karimi, R. (2007) Precise quasi-geoid map of Iran based on minimum-distance Molodensky telluroid mapping. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 05273. Ardalan, A. A.; Nafisi, V. (2007) Is strain analysis based on displacement field reliable for Geodynamics applications? EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 01699. Ardalan, A.A.; Nafisi, V. (2007) Application of variance component estimation method for strain analysis directly from repeated geodetic observations. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 01700. Ardalan, A.A.; Salimi, H. (2007) Computation of radial deformation of crust due to tide on the coastal station at Perssain Gulf and Oman sea. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 05127. Ardalan, A.A.; Gharebaghi, A. (2007) A proposal for establishment and application of multi-sensor geodesy stations for geodynamics studies. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 01531. Ardalan, A. A.; Hashemi, H. (2007) Spectroscopy analysis of the single satellite GRACE-1. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 09945. Ardalan, A.A; Tourian, M.J (2007) Application of satellite altimetry observations as amonitoring device for long terms sea level changes. Case study: Persian Gulf and Oman Sea. EGU General Assembly 2007. Geophysical Research Abstracts, Vol. 9, 00666. Ardalan, A.A.; Grafarend, E. W.; Karimi, R.; Poutanen, M. (2008) A new Geodetic Boundary Value Problem approach to high-resolution geoid computations based on relative gravity, geopotential numbers, and Mean Sea Level as the boundary data; Case study: Southwest Finland geoid. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11169, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Karimi, R. ; Bilker-Koivula, M. (2008) A new ellipsoidal Boundary Value Problem approach to telluroid and quasigeoid computations. Geophysical Research Abstracts,Vol. 10, EGU2008-A-01082, EGU General Assembly Vienna, 13-18 April 2008. Hashemi, H.; Ardalan, A.A. (2008) A study over direct tidal effect on the GRACE satellite observables. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11980, EGU General Assembly Vienna, 13-18 April 2008. Hashemi, H.; Ardalan, A.A. (2008) A study over indirect solid earth tide effect on the GRACE observables. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11982, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Hashemi, H. (2008) Evaluation of 80 geopotential models using line of sight micro-gravimetry observation of GRACE as the benchmark. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11984, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Karimi, R.; Sneeuw, N. (2008) Application of satellite altimetry derived Mean Sea Level as a boundary data for an iterative gravimetric boundary value problem approach to the Sea Surface Topography and the marine geoid computations. Geophysical Research Abstracts, Vol. 10, EGU2008-A-05571, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Hashemi-Farahami, H. (2008) A new empirical global ocean tide and Mean Sea Level model based on Jason-1 satellite altimetry observations. Geophysical Research Abstracts, Vol. 10, EGU2008-A-06395, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Karimi, R. (2008) A minimum distance approach to marine geoid computation. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12082, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Grafarend, E. W.; Hashemi, H.; Sneeuw, N.; Poutanen, M. (2008) On the latest improvements in the geoid potential value computations: Procedure and accuracy. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12121, EGU General Assembly Vienna, 13-18 April 2008. Hashemi, H.; Ardalan, A.A. (2008) A study over indirect ocean tide effect on the GRACE observables. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11981, EGU General Assembly Vienna, 13-18 April 2008. Jafari, M.; A. Ardalan, A. Frequency domain versus time domain smoothing of physical observations. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12078, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Joodaki, G.; Nafisi, V. (2008) On the marine geoid computations using MSL.Geophysical Research Abstracts, Vol. 10, EGU2008-A-00899, EGU General Assembly Vienna, 13-18 April 2008. Grafarend, E.W.; Ardalan, A.A.; Karim, R. (2008) Towards Mars reference equipotential surface, reference ellipsoid and ellipsoidal harmonic coefficients. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12042, EGU General Assembly Vienna, 13-18 April 2008. A. Ardalan, A.; Karimi, R.; Poutanen, M. (2008) A boundary value problem approach to height datum unification. Geophysical Research Abstracts, Vol. 10, EGU2008-A-05616, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Raoofian, M. (2008) A comparative study among computation techniques for deformation analysis based on repeated geodetic observations. Geophysical Research Abstracts, Vol. 10, EGU2008-A-12359, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Joodaki, G.; Sharifi, M.A. (2008) A satellite gravimetric approach to the crustal deformation monitoring, Case study: Detection of the crustal deformation caused by Sumatra-Andaman and Nias earthquakes using GRACE data. Geophysical Research Abstracts, Vol. 10, EGU2008-A-05908, EGU General Assembly Vienna, 13-18 April 2008. Ardalan, A.A.; Nafisi, V. (2008) A data fusion technique for combined application of geodetic and geotechnical observations for crustal and structural deformation monitoring. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11985, EGU General Assembly Vienna, 13-18 April 2008. A. Ardalan, A.; Hashemi, H. (2008) Time variation of the geoid’s gravity potential value W0, Sea Surface Topography (SST), and the marine geoid based on modern satellite altimetry and satellite gravimetry missions. Geophysical Research Abstracts, Vol. 10, EGU2008-A-11046, EGU General Assembly Vienna, 13-18 April 2008. A. Ardalan, A.; Torabi, M. (2008) Along track spectral analysis of satellite altimetry observations for Mean Sea Level modeling. Geophysical Research Abstracts, Vol. 10, EGU2008-A-10024, EGU General Assembly Vienna, 13-18 April 2008. Karimi, R.; A. Ardalan, A. (2008) An iterative Lagrangian approach to Sea Surface Topography and marine geoid computations following exactly the definition of the geoid according to Gauss and Listing. Vol. 10, EGU2008-A-11754, EGU General Assembly Vienna, 13-18 April 2008. Shojaee K., Hazrati B, Ardalan AA (2008) A comparison between the results of free span rectification and pipeline side scan sonar surveying to improve the post-lay surveying of a laid pipe; case study: Two Pipelines on South Pars Gas field Phases 9-10, Persian Gulf. Vol. 10, EGU2008-A-01586, EGU General Assembly Vienna, 13-18 April 2008. Shojaee K, Hazrati B, Ardalan AA (2008) An optimized observational network design for USBL calibration via geodetic network robustness analysis as an offshore standard method Case study: calibration of Simrad HPR USBL. Vol. 10, EGU2008-A-01587, EGU General Assembly Vienna, 13-18 April 2008. Hazrati B, Shojaee K, Ardalan AA (2008) Side scan sonar image enhancement using wavelet analysis; case study: EdgeTech FS4200 digital side scan sonar image. Vol. 10, EGU2008-A-01589, EGU General Assembly Vienna, 13-18 April 2008. Hazrati B, Shojaee K, Ardalan AA (2008) Feasibility study of real-time correction of geometric distortion in side scan sonar images; case study: EdgeTech 4200FS side scan sonar image. Vol. 10, EGU2008-A-04950, EGU General Assembly Vienna, 13-18 April 2008. Ardalan AA, Raoofian M (2008) The study of crustal motions based on planar and surface deformation tensors, via space geodetic measurements. 14th General Assembly of Wegener, Sepember 15-18, 2008, Darmstadt, Germany. > Books or Contributions to Books A. A. Ardalan (1999) High Resolution Regional Geoid Computation in the World Geodetic Datum 2000, based upon collocation of linearized observational functionals of the type GPS, gravity potential and gravity intensity. Ph.D. thesis. Department of Geodesy and GeoInformatics of University of Stuttgart/Germany, November 1999. E.W. Grafarend, F. Krumm, and V.S. Schwarze (Eds.) (2003) Geodesy the challenge of the 3rd mellennium. Springer-verlag Berlin Heidelberg, 2003. Ardalan A. A., Hashemi-Frahani H. (2008) . In: Lecture Notes in Earth Sciences Nonlinear Time Series Analysis in the Geosciences – Applications in Climatology, Geodynamics, and Solar-Terrestrial Physics, Vol 112. Eds: R. V. Donner, and S. M. Barbosa. Springer-Verlag Heidelberg, 2008, 374 p., Hardcover ISBN: 978-3-540-78937-6. webadmin@engmail.ut.ac.ir   tel: (+9821) 88003323, 88020403 (EXT. 4234, 4276)