摘要
针对由3颗或者3颗以上卫星组成的分布式SAR卫星系统,该文提出了一种基于改进粒子群算法的构形优化设计方法。首先给出了系统卫星平均轨道要素偏差的确定方法,并确定了分布式SAR卫星系统构形设计的一般流程。为了准确快速的完成基于任务要求的系统构形设计,提出了基于SM-PSO算法的系统构形优化设计方法。最后,以构形稳定性为目标函数,有效基线范围、工作时间和地面覆盖带为约束条件,对系统构形进行优化设计。仿真结果表明:该系统构形优化设计方法得到的系统构形参数可以较好地满足系统的覆盖特性以及系统在长期运行过程中能够保持相对稳定的有效基线。
Aimed at the distributed SAR satellite system consisting of more than three satellites, SM-PSO algorithm-based configuration optimal design is proposed in this paper. The mean orbital elements differences of among satellites are given and the normal configuration design flow of distributed SAR satellite system is presented In order to realize exactly and fleetly system configuration design faced to mission requirements, the SM-PSO algorithm-based configuration optimal design method is developed. The configuration optimal design is completed in terms of configuration stability, limited by effective baseline range, working time and ground coverage area. It is indicated that the system configuration initial parameters from this method can meet with ground converge and relative steady effective baseline requirements.
出处
《电子与信息学报》
EI
CSCD
北大核心
2008年第11期2714-2718,共5页
Journal of Electronics & Information Technology
基金
国家"十一五"预研背景项目(113020102)
国家博士后科学基金(20070410265)资助课题
关键词
分布式SAR系统
改进粒子群算法
构形优化设计
优化指标
Distributed SAR satellite system
SM-PSO algorithm
Configuration optimal design
Optimizing function
