导航卫星轨道安全性分析及离轨处置策略综述

Safety Analysis and De-Orbit Disposal Strategy of Navigation Satellite Orbit

导航卫星到寿后的处理关系到其在轨运行的安全性。介绍了现有导航星座废弃卫星的处理现状,分析了导航卫星在轨运行环境,综述了废弃卫星处理策略。对两种废弃卫星处理策略进行归纳总结,指出了偏心率长期稳定策略只能减缓空间碎片的增长;而偏心率增长最大再入大气层策略可以实现空间碎片的清除,同时,利用小推力或太阳光压的离轨方法为废弃卫星的清除提供了思路。

Disposal of navigation satellite at the end life is related to its safety in orbit.The disposal status of the navigation satellite were introduced,and the operating environment of the navigation satellite in orbit were analyzed,the disposal strategy of the disposed satellite were summarized.By comparing the two kinds of disposal strategies.It is pointed out that the long-term stabilization strategy of eccentricity can only slow down the growth of space debris.The strategy of eccentricity increased maximum to re-enter the atmosphere can remove space debris.Meanwhile,the method of deorbit with low thrust or solar radiation pressure can provide ideas for the removal of disposed satellites.