TanDEM-X系统相对测高性能分析（英文）

汪丙南; 向茂生

doi:10.11834/jrs.20090106

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TanDEM-X系统相对测高性能分析（英文）
Relative height accuracy analysis of TanDEM-X system
2009年13卷第1期页码：49-53
纸质出版：2009
DOI： 10.11834/jrs.20090106
稿件说明：

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[1]汪丙南,向茂生.TanDEM-X系统相对测高性能分析(英文)[J].遥感学报,2009,13(01):49-53. DOI： 10.11834/jrs.20090106.

Relative height accuracy analysis of TanDEM-X system[J]. Journal of Remote Sensing, 2009, 13(1): 49-53. DOI： 10.11834/jrs.20090106.

摘要

针对TanDEM-X卫星计划

重点分析其在一个轨道周期内的测高性能的变化情况。首先从建立双星HELIX构形的HILL方程出发

分析了一个轨道周期内直接影响干涉测高的有效基线

包括顺轨和交轨基线的影响

然后讨论了系统相关系数及其对干涉相位误差的影响

通过建立相对高程误差模型

进一步分析了系统相对高程精度。最后计算机仿真结果验证了分析的正确性。

Abstract

According to TanDEM-X satellite program

this paper studies interferometric capabilities of TanDEM-X mission during an orbit period and tries to get the change of relative height error in a global scope.Firstly

based on HILL-equation of the helix formation

effective baseline

including the range and azimuth effective baseline

which has a great impact on interferometry is analyzed in detail during an orbit period.Then the influence of baseline decorrelation imposing on interferometric phase error is discussed detailedly

which is the most important influence on relative height error.At last relative height model is established and relative height error or TanDEM-X system is presented further.The computer simulating result shows the validity of analysis.