分布式卫星InSAR系统参数的优化设计

The Optimization of System Parameters of Distributed Satellites InSAR

利用分布式卫星干涉合成孔径雷达(In terferom etric Syn thetic A perture R adar,InSAR)系统可以获取数字高程图(D ig ita l E levation M ode l,DEM),要得到高精度的DEM,需要对该系统参数进行优化设计.本文在综合考虑各种去相关因素下,详细研究了分布式卫星InSAR系统干涉信号的相关性,给出了分布式卫星InSAR系统参数的优化设计准则,利用该准则对视角、信号带宽和基线进行了优化设计,并证明了单视和多视处理下优化设计结果的一致性.

Digital Elevation Model （DEM） can be obtained by using distributed satellites Interferometric Synthetic Aperture Radar （InSAR） system to obtain high-precision DEM of the parameters of the InSAR system need to be optimized. After a research on the correlation among interferential signals of the distributed satellites InSAR system, the author has presented a criteria for optimizing distributed satellites InSAR system parameters, and optimized visual angle, signal bandwidth and baseline. The author has also proved that the optimization under single-view processing is consistent with that under multi-view processing.