DISTRIBUTION OF GPS SLANT DELAY FOR WATER VAPOR TOMOGRAPHY IN YANGTZE RIVER DELTA
1)Earthquake Administration of Jiangsu Province, Nanjing 210014
2)Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030
3)College of Surveying and Geo-informatics, Tongji University, Shanghai 200092
Abstract The distribution of GPS slant observations taken by continuously operating Yangtze River Delta GPS network this work is described . The distribution of the grid coverage of slant data at different temporal and spatial resolutions are given. From this,the feasibility of 3D water vapor tomography in a test region is discussed. At last, a set of additional instruments in GPS network scheme for water vapor tomography is researched by using simulation method with ECMWF data. It is concluded that the bad geographic distribution of GPS network in Yangtze River Delta causes difficulties in tomography, and the overall accuracy can be improved by adding some stations, especially in lower atmosphere.
Wang Wei,Song Shul,Wang Jiexian et al. DISTRIBUTION OF GPS SLANT DELAY FOR WATER VAPOR TOMOGRAPHY IN YANGTZE RIVER DELTA[J]. jgg, 2013, 33(2): 151-154.
Wang Wei,Song Shul,Wang Jiexian et al. DISTRIBUTION OF GPS SLANT DELAY FOR WATER VAPOR TOMOGRAPHY IN YANGTZE RIVER DELTA[J]. jgg, 2013, 33(2): 151-154.
