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基于SBV传感器的地球同步带目标监视系统星座设计

DOI: 10.11728/cjss2015.01.094, PP. 94-103

Keywords: 星座设计,地球同步带,天基监视系统,可见光传感器,观测模式

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Abstract:

以天基可见光(Space-BasedVisible,SBV)传感器实现对整个地球同步带的监视为研究背景,对监视系统星座构型进行分析与设计.在分析三种观测模式优劣的基础上,给出了最优观测模式;导出了监视卫星轨道高度与搜索栅栏参数之间的关系,并以此确定了监视系统轨道高度的可选范围;通过分析影响天基可见光传感器观测时段和操作策略的因素,给出了SBV传感器的最优观测时段及成像时间的分配原则;在分析单星和双星监视系统方案覆盖率与重访次数的基础上,给出了监视系统卫星数目和搜索栅栏大小的选取原则以及满足回归性的双星监视系统轨道高度选取范围.研究结果表明,监视卫星经过天极附近时采用pinchpoints观测模式可有效提高对较大倾角地球同步轨道目标的覆盖能力,其轨道采用降交点在06:00LT或18:00LT时的太阳同步圆轨道,高度约在615~850km,且在此范围内有6条轨道满足星座回归性要求.

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