天基近地轨道空间监视雷达卫星重访效能分析

Recovery Analysis of Space-based Radar for LEO Surveillance

空间目标监视系统是空间态势感知的重要支撑，为克服地基观测系统时空监视能力的限制，基于天基平台的空间目标监视技术是空间目标监视领域技术发展的必然趋势。天基监视雷达是天基监视技术的重要组成部分，着眼于未来空间监视的需要，必须开展天基雷达相关技术的研究。本文分析了近地轨道空间卫星间相对距离变化的周期性，以此为基础给出了天基雷达对观测目标的重访特性，为天基空间监视雷达卫星星座系统的设计提供了理论基础。

Space object surveillance system is the most important support for space situation awareness. To overcome the restriction of ground-based systems in space and time, it is a certain direction to develop space-based surveillance systems. Space-based radar is an important component of space-based surveillance technology. To prepare for the requirements of future space surveillance, it is necessary to develop technologies associated with space-based radar. The periodicity of relative distance of two LEO satellites is analyzed, and the property of space-based radar＇s recovery to objects is summed up in this paper. The result is a contribution to the theoretical foundation for space-based radar constellation systems.