Determining origins of satellite breakup events in LEO region

作     者：Yongjie Liu Yu Jiang Hengnian Li Zongbo Huyan Hongchao Wang 

作者机构：State Key Laboratory of Astronautic DynamicsXi'an Satellite Control CenterXi'an 710043China 

出 版 物：《Astrodynamics》 (航天动力学（英文）)

年 卷 期：2023年第7卷第4期

页      面：465-476页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：grateful to the National Key R&D Program of China(Grant No.2022ZD0117301)for funding this study 

主　　题：breakup collision explosion Kullback-Leibler(KL)divergence Jensen-Shannon(JS)divergence 

摘      要：Currently,a surge in the number of spacecraft and fragments is observed,leading to more frequent breakup events in low Earth orbits(LEOs).The causes of these events are being identified,and specific triggers,such as collisions or explosions,are being examined for their importance to space traffic *** propagation methods were employed to trace the origins of these types of breakup *** were conducted using the NASA standard breakup model,and satellite Hitomi’s breakup was ***-Leibler(KL)divergences,Euclidean 2-norms,and Jensen-Shannon(JS)divergences were computed to deduce potential types of breakups and the associated fragmentation *** the simulated case,a discrepancy of 22.12 s between the estimated and actual time was ***,the breakup of the Hitomi satellite was estimated to have occurred around UTC 1:49:26.4 on March 26,*** contrasts with the epoch provided by the Joint Space Operation Center,which was estimated to be at 1:42 UTC±11 *** the findings,it was suggested that the techniques introduced in the study can be effectively used to trace the origins of short-term breakup events and to deduce the types of collisions and fragmentation masses under certain conditions.