一种改进的脉冲去交错算法

摘要

View of Pulse Repetition Interval(PRI)transform,this paper puts forward an improved deinterleaving algorithm for radar pulses.In this improved algorithm,the autocorrelation operation result of overall pulse train is not used as the unique criterion to judge PRI existing or not,and the sub⁃train of pulses with same interval is extracted.The true PRI can be determined by logically analy⁃zing the interval between pulses in the sub⁃train,which makes the signal analysis be easy.The subharmonics and the interference caused by pulses from different emitters can be effectively suppressed, and the staggered signal can be identified effectively. The numerical simulation proves the availability of the proposed algorithm.%从Pulse Repetition Interval （ PRI）变换的思路出发，提出了一种改进的去交错算法。该算法没有将整个脉冲流自相关运算的结果作为判断PRI存在与否的唯一准则，而是提取出具有相同脉冲间隔的子脉冲流。通过对子脉冲流中脉冲间隔的逻辑分析可以识别出真实的PRI，大大降低了信号分析的难度，并且有效抑制子谐波和多源脉冲的相互干扰，还可以有效识别出参差雷达。通过计算机仿真验证了该算法的有效性。