一种脉冲多普勒雷达解距离模糊的新算法

The Resolution of Range Ambiguity in a Medium Pulse Doppler Radar

目的研究中重复频率（ＭＰＲＦ）脉冲多普勒雷达距离模糊问题．方法首先确定基准ＰＲＦ，然后存储其余各ＰＲＦ相对于基准ＰＲＦ在各个距离单元上的余数差值，制成查找表；通过对实际目标距离（具有模糊性）处理，在查找表中搜索，得到相应的真实距离值．结果在保证全局可检测的前提下，找出一种优化解模糊的算法——余差查表法及其修正形式．结论这种方法有利于解距离模糊，并且有较强的实时性．

Aim To resolve the ambiguities of range for a medium pulse repetition frequency (MPRF) Doppler radar. Methods\ A PRF was taken as reference, and a look up table was made by storing the differences of residues between the other PRF and the reference on each range cell. After a set of measured ambiguous range values were obtained, the unambiguous range could be got by searching in the look up table, using the differences of residues.Results\ In order to guarantee the global detectability of all targets, the algorithm of de ambiguity was found: a method by using the differences of residues of look up table and its modified style were given.Conclusion\ This look up table method helps to resolve the range ambiguity and is easy to be used in real time.