TY - JOUR ID - 54534 TI - Reducing Atmospheric Water Vapor Effects on the Interferogrametric SAR Products using MERIS-FR and GPS (Case Study: Mashhad subsidence) JO - Scientific Quarterly Journal of Geosciences JA - GSJ LA - en SN - 1023-7429 AU - Adham Khiabani, S. AU - Mobasheri, M. R. AU - Valadanzoej, M. J. AU - Dehghani, M. AD - Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Theran, Iran AD - Dept. of Civil and Environmental Engineering, School of Engineering, Shiraz University, Shiraz, Iran Y1 - 2012 PY - 2012 VL - 21 IS - 83 SP - 123 EP - 128 KW - Remote Sensing KW - SAR interferometry KW - MERIS KW - GPS DO - 10.22071/gsj.2012.54534 N2 - 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 to reduce the atmospheric contributions on the interferometric measurements in Mashhad subsidence area. In this model, the Full-Resolution (RF) MODIS data and meteorological information were used in order to estimate the water vapor and reduce the pressure effect, respectively. Moreover, water drops as well as the clouds effects were considered in the proposed model. Utilizing error propagation, model error was estimated as 7.2 mm. The Root Mean Square Error (RMSE) as a quantitative comparison between GPS measurements and interferometric results showed an improvement from 9 mm (before atmospheric correction) to 2 mm after applying the correction model. UR - http://www.gsjournal.ir/article_54534.html L1 - http://www.gsjournal.ir/article_54534_1abc4b7e7f2157c32c271c5d4842ba9e.pdf ER -