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Abstract
空间碎片碰撞预警工作主要针对的是可监测的较大空间碎片, 预测航天器与碎片之间的碰撞风险, 并根据一定的预警判据来评估风险的大小, 进而做出合理的轨道规避决策. 碰撞概率是碰撞风险评估的重要依据. 复合体尺寸、交会距离和误差是影响碰撞概率的三个决定性因素. 当复合体尺寸与交会距离差别不大时, 误差因素对碰撞概率结果起着决定性的作用. 在利用整天误差计算碰撞概率的基础上, 提出了利用精化误差计算碰撞概率的方法, 在危险交会分析中取得了良好的效果.
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