天基态势感知星座构型设计  

Optimizing Design for Constellation Configuration of Space-Based Space Situation Awareness

作　　者：张晨[1] 朱政帆 ZHANG Chen;ZHU Zheng-fan(Key Laboratory of Space Utilization,Chinese Academy of Sciences,Beijing 100094,China;DFH Satellite Co.,Ltd.,Beijing 100094,China)

机构地区：[1]中国科学院太空应用重点实验室,北京100094 [2]北京航天东方红卫星有限公司,北京100094

出　　处：《计算机仿真》2023年第12期93-98,107,共7页Computer Simulation

摘　　要：随着巨型星座的快速部署以及太空碎片的持续增加,这类数量庞大且暗弱的空间目标给传统地基观测模式带来了巨大挑战。天基态势感知星座采用对空体积覆盖和多星协同的工作模式,能够有效提高观测这类目标的时空分辨率。对于天基态势感知星座构型设计问题,套用设计对地遥感星座的网格点统计法精度差且计算效率低。基于计算图形学的相关方法,提出三维天基态势感知星座构型设计策略,通过多边形裁剪和切片法求体积的设计思路,精确计算了形状复杂且时变的多重覆盖体积。在数值仿真中,遍历星座构型的解空间,获得满足多重覆盖约束且卫星数最少的最佳星座构型。Space situational awareness(SAS)is focused on the detection,tracking and identification of passive and active space objects.In the past,this process relied primarily on ground-based system.However,difficulties a⁃rise when mega constellation and debris are considered.Space based optical constellation may help alleviate some of these difficulties due to cold background observation and muti-satellite working mode,and constellation optimization is needed to balance cost and observation capacity.As the observation mode is space volume coverage,the traditional grid coverage method which widely used in ground remote sensing scenarios leads to poor numerical accuracy and low computational efficiency.This paper focus on optimizing constellation configuration of space situational awareness sys⁃tem,to that end,computer graphics is leverages to evaluate complex and time-varying multi coverage volume by pol⁃ygon clipping and integration.In numerical simulation,solution space is explored by grid searching possible configu⁃ration,and the optimal planar and three-dimensional constellation satisfying multiple coverage constraints are ob⁃tained.

关 键 词：卫星星座 星座优化 空间态势感知 太空碎片 计算机图形学 

分 类 号：V412.41[航空宇航科学与技术—航空宇航推进理论与工程]