大气效应对合成孔径雷达干涉测量的影响分析
首发时间:2012-12-18
摘要:本文从合成孔径干涉测量(InSAR)工作原理的角度分析了大气效应对InSAR测量技术的影响,并采用伊朗巴姆地区的数据进行案例研究。通过对比InSAR初始干涉图和大气位相差分图,发现两者之间存在一定的相关性。研究结果表明,去除大气效应后地表形变信息突显出来,大气水汽效应的确是限制C波段SAR数据干涉测量结果精度的最重要的因素。
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Analysis of the atmospheric effects on synthetic aperture radar interferometry
Abstract:In this paper, we analyze the atmospheric effects on synthetic aperture radar interferometry (InSAR) and take the SAR images of the Bam in Iran as our experimental data. It can be found that there exists some certain correlation between the original interferogram and the differential atmospheric phase. It indicates that the ground deformation information becomes visible when the atmospheric effect is removed. The water vapor in the atmosphere is indeed an important factor to limit the accuracy of the C-band InSAR measurements.
Keywords: InSAR LOS displacement atmospheric effect MERIS
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