2006•National Remote Sensing BulletinOpen access

DEM Accuracy Analysis of Formation InSAR Considering Baseline Decorrelation

Haifeng Huang, Liang Diannong,   国防科技大学电子科学与工程学院 湖南长沙410073  

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Abstract

针对主星带辅星群编队InSAR的双站、斜视、空间基线等特点,首先建立绝对测高误差与相对测高误差模型;重点分析了基线去相关对干涉相位误差的影响;对干涉车轮和钟摆编队的测高性能、对测高精度与基线矢量的关系进行仿真分析;其次与两种经典近似几何关系下的测高精度分析进行对比。仿真结果表明:干涉测高精度必须考虑基线去相关的影响;相对测高精度明显优于绝对测高精度;经典近似几何给分析测高精度带来很大误差。

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针对主星带辅星群编队InSAR的双站、斜视、空间基线等特点,首先建立绝对测高误差与相对测高误差模型;重点分析了基线去相关对干涉相位误差的影响;对干涉车轮和钟摆编队的测高性能、对测高精度与基线矢量的关系进行仿真分析;其次与两种经典近似几何关系下的测高精度分析进行对比。仿真结果表明:干涉测高精度必须考虑基线去相关的影响;相对测高精度明显优于绝对测高精度;经典近似几何给分析测高精度带来很大误差。

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Available abstract

针对主星带辅星群编队InSAR的双站、斜视、空间基线等特点,首先建立绝对测高误差与相对测高误差模型;重点分析了基线去相关对干涉相位误差的影响;对干涉车轮和钟摆编队的测高性能、对测高精度与基线矢量的关系进行仿真分析;其次与两种经典近似几何关系下的测高精度分析进行对比。仿真结果表明:干涉测高精度必须考虑基线去相关的影响;相对测高精度明显优于绝对测高精度;经典近似几何给分析测高精度带来很大误差。

Key concepts: Decorrelation, Interferometric synthetic aperture radar, Baseline (sea), Remote sensing, Geodesy, Phase unwrapping, Geology, Computer science

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