期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B7
页码：161-164
出版社：Copernicus Publications
摘要：In this paper, the precise orbit and the coarse orbit are both used to compare the characteristics of the baseline errros on interferograms. To eliminate the fringes caused by baseline errors, a linear algorithm which is done on interferograms and a nonlinear algorithm which is performed on phase-unwrapped maps are both used. The unwrapped phase values are decreased greatly after baseline errors are eliminated using bilinear method. The results show that the standard deviation (STD) is decreased from 10.9 radians to 3.1 radians. In nonlinear method, a quadratic function is used to fit the surface of the phase-unwrapped map, then the fitted surface is subtracted. STD is decreased from 10.9 radians to 2.8 radians. The results show that the nonlinear method is a little effective than the linear one
关键词：Satellite Remote Sensing; SAR Image; SAR Interferometry; Accuracy Analysis; Ground Deformation
