基于高程测量误差的分布式卫星SAR编队构形设计

卫星编队构形是影响分布式卫星SAR系统性能的重要因素之一。该文主要研究满足绕飞轨道条件下的分布式卫星SAR编队构形设计问题，提出了基于高程测量误差最小的分布式卫星SAR编队构形设计方法。文中给出了分布式卫星SAR多组高程测量数据融合后的像素单元高程测量误差表示，并提出了给定观测区域的高程测量误差表达式。在此基础上，以观测区域的高程测量误差为优化目标，采用遗传算法对分布式卫星初始编队构形进行优化设计。仿真试验验证表明，通过该方法得到的初始卫星编队构形能够较好的降低给定观测区域内的分布式卫星SAR高程测量误差。

Formation Optimization for Distributed Satellites SAR Based on Height Error

The key point of guaranteeing the distributed satellites system performance is to design the formation of the satellites appropriately. This paper studies the satellite formation optimization of distributed satellites system which moves on flying around orbit, and presents a new optimization method based on height-measure error. A composite pixel height error model after combining the multiple baseline measurements is presented, and the height error of the given scene is presented. Finally, the height error model of given scene is used to optimize the satellite formation of distributed satellites system by using genetic algorithm. The simulation results show that this method can decrease the height error of the given scene.