Volume 34 (2024)
Volume 33 (2023)
Volume 32 (2022)
Volume 31 (2021)
Volume 30 (2020)
Volume 29 (2020)
Volume 28 (2019)
Volume 27 (2018)
Volume 26 (2017)
Volume 25 (2016)
Volume 24 (2015)
Volume 23 (2014)
Volume 22 (2013)
Volume 21 (2012)
Volume 20 (2011)
Volume 19 (2010)
Volume 18 (2009)
Volume 17 (2008)
Volume 16 (2007)
Time Series Analysis of Hashtgerd Subsidence Using Radar Interferometry and Global Positioning System

P. Haghighatmehr; M. J. Valadanzouj; R. Tajik; S. Jabari; M. R. Sahebi; R. Eslami; M. Ganjiyan; M. Dehghani

Volume 22, Issue 85 , December 2013, , Pages 105-114

https://doi.org/10.22071/gsj.2012.54026

Abstract
  A large area in Hashtgerd plain, in southwest of Tehran, is subject to the land subsidence induced by overexploitation of groundwater. In this paper, in order to study the subsidence SAR interferometry (InSAR) and global positioning system (GPS) are used. The small baseline subset (SBAS) algorithm is ...  Read More

Reducing Atmospheric Water Vapor Effects on the Interferogrametric SAR Products using MERIS-FR and GPS (Case Study: Mashhad subsidence)

S. Adham Khiabani; M. R. Mobasheri; M. J. Valadanzoej; M. Dehghani

Volume 21, Issue 83 , December 2012, , Pages 123-128

https://doi.org/10.22071/gsj.2012.54534

Abstract
  SAR interferometry has shown its abilities in measuring the surface deformation in various applications. Atmospheric signals as an important factor affecting the interferometric measurements have temporally uncorrelated and complicated behavior. In this paper, a model based on the error source is presented ...  Read More

Bivalvias and Echinoides of Kazhdumi Formation from Sivand and Kuh-e- Khanekat Stratigraphic Sections in North and North- East of Shiraz

M. Dehghani; S. Dehghani; V. Ahmadi; A. Zavarei

Volume 21, Issue 84 , December 2012, , Pages 179-188

https://doi.org/10.22071/gsj.2012.53979

Abstract
  Two stratigraphic sections of Kazhdumi Formation were selected form Sivand (165m.) and Kuh-e-khanekat (108m.) Areas for Pelecypoda avd Echinoides study. Recognized taxones of Bivalvia and Echinoides are following as: Neithea striatocostata, Exogyra undata, Isocardia aff. neglecta, Astarte sp., Opis sp., ...  Read More

A New Effective Approach for Enhancement of SAR Images Based on Extraction of Interscale Dependencies in the Wavelet Domain

M. Forouzanfar; H. Abrishami-Moghaddam; M. Dehghani

Volume 19, Issue 76 , January 2010, , Pages 17-22

https://doi.org/10.22071/gsj.2010.55636

Abstract
  Despite the wide application of SAR images in lineaments extraction, DEM generation and displacements determination, their radiometric quality and interpretability is degraded due to the presence of a multiplicative noise called speckle. Therefore, the enhancement of SAR images is an important step before ...  Read More

Noise Reduction of the Radar Interferometric Phase Used for Surface Displacement Measurement Based on Wavelet Transform in the Complex Domain

H. Fattahi; M. J. Valadan Zouj; M. R. Mobasheri; M. Dehghani

Volume 17, Issue 66 , February 2008, , Pages 170-181

https://doi.org/10.22071/gsj.2008.57655

Abstract
        Interferometric Synthetic Aperture Radar (InSAR) technique using phase information has demonstrated its abilities in topographic mapping and measuring surface deformation with the precision of meter and sub-centimeter, respectively in a very high spatial resolution. However, ...  Read More

Study of 2D and 3D Geometric Models Applied on SAR Images(A case study in BAM area)

M. Dehghani; M. J. Valadan Zouj; A. Mansourian

Volume 17, Issue 65 , March 2007, , Pages 183-195

https://doi.org/10.22071/gsj.2008.58202

Abstract
  study several 2D and 3D math models have been tested in order to correct slant range SAR data geometrically. Some of these models consider the imaging geometry at the time of imaging while the others relate the ground space to the image one by mathematical polynomials. The images used here are 3 ENVISAT ...  Read More