主星带伴随小卫星编队SAR系统干涉测高精度与编队构形设计

针对主星伴随小卫星编队SAR新的干涉几何关系,在给出其新的干涉测高原理的基础上,建立了绝对高程误差模型和相对高程误差模型。分析了空间基线姿态参数与测高精度之间的关系,给出了具有一般性意义的测高精度关于三维基线姿态的分布全貌图。以此测高精度分布图对两种典型编队构型的测高性能进行了分析,指出两种编队在设计上的先进性,证明了该图对基于测高性能的编队构型优化设计具有重要意义。

Height-Measure Accuracy of INSAR in Spaceborne Parasitic SAR System and Flying Formation Design

Principle of height measurement of INSAR in spaceborne parasitic SAR system was given for the new geometry in this new system, based on which error models of absolute height and relative height measurement were built. A figure which described relationship between height measure accuracy and baseline attitude angles was given. Two classic formation designs of the small satellites were analyzed using that figure and found to be good designs from the point of view of gaining high height measure accuracy. The figure is proven to be useful for guiding the design of flying formation.