Walker星座碰撞检测及碰撞概率分析  

Analysis of Collision Detection and Collision Probability in Walker Constellation

作　　者：吴启星 陈雨 WU Qixing;CHEN Yu(Beijing Institute of Tracking and Telecommunicications Technology,Beijing 100094,China;Shanghai Engineering Center for Microsatellites,Shanghai 201210,China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094 [2]上海微小卫星工程中心,上海201210

出　　处：《上海航天（中英文）》2020年第5期73-78,85,共7页Aerospace Shanghai（Chinese&English）

摘　　要：针对Walker星座的碰撞问题,在狭义碰撞的基础上,设计一种Walker星座碰撞检测模型。该模型考虑星座实际在轨构型发散与维持偏差,给出了Walker星座构型维持条件下的广义碰撞检测与碰撞概率计算方法,并提出了表征Walker星座构型防碰撞性能的安全度系数。利用该检测模型,在进行Walker星座设计时不仅可以避免狭义碰撞,还可以实现星座在构型维持阈值内的广义碰撞安全性分析,实现星座构型择优。通过案例仿真分析,证明了该系统模型的可行性及可靠性。A detection model of satellite collision in Walker constellation is designed on the basis of narrow sense collision in order to solve the collision problem in Walker constellation.The actual constellation divergence and maintenance deviation of the orbital configuration are considered.The calculation methods for generalized collision detection and collision probability under the Walker configuration maintenance condition are given,and a safety factor is proposed to characterize the collision avoidance performance of the Walker constellation configuration.Using this detection model to design Walker constellation can avoid narrow collisions and realize the generalized collision safety analysis of the constellation within the configuration maintenance threshold.The feasibility and reliability of the detection model are proven by case simulation analysis.

关 键 词：WALKER星座 构型维持 广义碰撞 碰撞概率 安全度系数 

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]