研究提高雷达探测效率问题,空间目标的轨道参数满足一定条件时则永远不能进入雷达的探测空域,可以定为被筛选掉,并可以提高雷达探测效率.为了解决快速筛选,首先明确雷达的距离与能探测目标高度之间的关系,并且给出了星下点轨迹的计算方法,根据雷达与空间目标的相对几何关系,并引入“轨道天球”的新概念,从静态和动态两个方面深入分析了雷达对空间目标的筛选原理和过程,准确推导了雷达对可探测目标的快速筛选方法,最后根据2009年2月公布的空间目标数据进行试验,并将结果与卫星工具包可见性分析结果进行比对,结果表明,算法可以比较有效地将不进入雷达可探测范围的空间目标筛选掉,从而验证了方法的有效性.%Those space objects can never enter search space of radar if their orbit parameters are in some conditions. Those objects can be screened so that the analysis efficiency of radar detecting capability is improved. In this paper, firstly the relationship between radar range and the height of detectable space object was discussed. The calculating method of ground track of space object was given. Based on the geometry relationship of radar and space object, with the introduction of the new concept of ' orbit celestial sphere' , the screening principle and process of radar to space objects were analyzed deeply at static and dynamic aspects. The fast screening algorithm was derived in detail. Finally, some experiments were done based on the data released by NASA in February, 2009. The relsults were compared with those of access based on Satellite Tool Kit. The result demonstrates that the algorithm in this paper can efficiently screen out those space objects not going into radar scanning space and those space objects that can go into the radar space are not screened by mistake. Thus, the effectiveness of the algorithm in this paper is verified.
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