多约束条件分布式InSAR编队构形工程优化方法  

An engineering optimization method for distributed spaceborne InSAR formation configuration based on multiple constraints

作　　者：李楠[1] 丛琳 陈重华[1] 赵迪[1] 侯雨生[1] 陈熙之[1] LI Nan;CONG Lin;CHEN Chonghua;ZHAO Di;HOU Yusheng;CHEN Xizhi(Shanghai Institution of Satellite Engineering,Shanghai 201109,China;China Centre for Resources Satellite Data and Application,Beijing 100094,China)

机构地区：[1]上海卫星工程研究所,上海201109 [2]中国资源卫星应用中心,北京100094

出　　处：《测绘学报》2022年第12期2440-2447,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(61601298)。

摘　　要：卫星编队构形是影响分布式InSAR系统DEM性能的关键因素,本文针对天绘二号卫星系统需求提出了一种基于多个约束条件的分布式InSAR编队构形工程优化设计方法。该方法结合工程实际,首先分析并确定了构形设计的多约束条件;然后通过引入了编队相对运动学模型,实现了设计约束的数学描述;最后以构形被动安全性最优为目标,借助蚁群算法对相对运动构形参数进行优化设计。仿真试验表明,文中方法寻优得到的构形设计结果满足工程约束,具备良好的被动安全性,并且该方法的有效性已经过天绘二号卫星在轨飞行验证。The formation configuration design of the distributed spaceborne interferometric SAR is the key issue affects the DEM system performance. Combined with the practical engineering of TH-2 satellite, an optimal method of InSAR formation determination based on multi-engineering constraints is proposed. The relative movement of formation is introduced firstly, and the mathematical description of the engineering bounds is modeled;then by using an improved ant colony algorithm, the parameters of formation are finally achieved with safety function maximization. Through the simulation, it is proved that the formation obtained can not only meets all the constraints, but also has the passive safety. Moreover, the correctness and validity of this method has already been verified in the on-orbit experiments.

关 键 词：分布式卫星 干涉合成孔径雷达 多约束条件 编队构形设计 工程优化 天绘二号 

分 类 号：P228.4[天文地球—大地测量学与测量工程]