探测前定轨：无线索探测的轨道参数匹配滤波
Orbit Determination Before Detect: Orbital Parameter Matched Filtering for Uncued Detection
摘要：
本文提出了一种新的算法，将轨道参数引入雷达模糊函数表达式，通过扩展标准模糊函数来匹配开普勒二体轨道。相干轨道匹配滤波器将最大限度地提高雷达对轨道上物体的灵敏度，并通过一次探测提供快速的初始轨道确定。然后，本文展示了如何将雷达参数纳入轨道搜索空间，特别是圆形轨道，可以实际实现无线索检测搜索。仿真结果进行比较，从星历数据获得的结果，表明所提出的方法确定的轨道路径，以及相关的雷达参数，将被观察到，匹配那些来自星历数据。
英文摘要：
This paper presents a novel algorithm to incorporate orbital parameters into radar ambiguity function expressions by extending the standard ambiguity function to match Keplerian two-body orbits. A coherent orbital matched-filter will maximise a radar's sensitivity to objects in orbit, as well as provide rapid initial orbit determination from a single detection. This paper then shows how uncued detection searches can be practically achieved by incorporating radar parameters into the orbital search-space, especially for circular orbits. Simulated results are compared to results obtained from ephemeris data, showing that the orbital path determined by the proposed method, and the associated radar parameters that would be observed, match those derived from the ephemeris data.
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