捷变频脉冲雷达解速度模糊算法研究

Algorithm for Resolving Velocity Ambiguity of Frequency-agile Pulse Radar

针对低/中重频脉冲雷达测速存在的速度模糊问题,在研究同频解速度模糊算法的基础上,提出了一种捷变频模式下解速度模糊的算法.该算法通过多普勒频率域到速度域的转换实现捷变频下的速度解模糊,利用错位差分查表处理的方式求解目标的真实速度.仿真结果分析验证了该算法的有效性,这在工程上对提高捷变频雷达的测速精度具有一定的价值.

Aimed at the velocity ambiguity problem existing in velocity measuring of LF/IF repetitive frequency pulse radar, an algorithm for resolving velocity ambiguity in the mode of frequency-agile is put forward, based on study of algorithm for resolving velocity ambiguity in the mode of common-frequency. By conversion of Doppler frequency domain into velocity domain, this proposed algorithm implements resolving velocity ambiguity in the mode of frequency-agile, and solve the real velocity of targets by means of processing of the interlaced difference lookup table. Simulation results prove the proposed algorithm to be effective, thus possessing an engineering reference for improving the velocity measuring precision of frequency-agile radar.