空间目标虚警主要来自恒星目标、恒星目标拖尾、空间目标的拖尾、背景图像及噪声,其虚警消除效果直接影响了整个天文光电观测系统的检测概率和虚警概率.在深入分析空间目标虚警来源的基础上,根据不同类型的虚警在图像中的不同特点,提出了相应的消除虚警的方法:1)利用目标的基本特征消除虚警;2)基于恒星目标拖尾和空间目标拖尾定位的方法消除其拖尾上的虚警;3)根据空间目标和恒星目标在差分处理前后的空间灰度分布变化和根据目标所在区域的图像在时域上的变化消除恒星目标产生的虚警;4)利用航迹信息确认目标,消除虚警.最后结合自研的实时信息处理机平台和大量的实测数据,验证了该方法的有效性及实时性.%The false space targets are mostly caused by stellar targets, smears of stellar targets and space targets, background image and image noise. The performance of eliminating them directly affects the detection probability and false alarm rate of the whole system. Based on the detailed analysis of the origin of false space targets, the methods of eliminating them are proposed according to their different features in images: 1) eliminating false space targets using their basic imaging features; 2) eliminating the false targets on smears of stellar targets and space targets by detecting the smears; 3) eliminating false space targets which come from stellar targets based on the changing of the temporal difference processing images and based on the variety of region images which include targets respectively; 4) confirming space targets with track information. Finally, combining with the hardware platform and real-measured data, the effectivity and real-time performance of methods are validated.
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