Error Analysis of Baseline, Phase and Atmosphere Delay in InSAR Data Processing
基线误差、相位误差和大气延迟误差对InSAR数据处理的影响分析

Based on the basic principles of InSAR,we can draw the following conclusions:an inverse proportion relation exists between errors of baseline,phase and atmosphere delay and length of effective baseline in terms of height measurement; atmosphere delay error impact on two\|pass deformation measurement changes little with incidence angle difference,and its impact on three-pass deformation measurement changes little with baseline ratio.When incidence angle is 23°and baseline ration 1/2,if we let its impact on deformation error less than 1 cm,atmosphere delay error must be less than 6.5 mm for two\|pass DInSAR and 7.5 mm for three-pass DInSAR.