传统的雷达脉冲列去交错算法很容易出现信号的脉冲重复间隔及其整数倍(即子谐波)同时存在的现象,给雷达脉冲串的去交错造成了困难。介绍了PR I变换的脉冲重复间隔估计算法,该算法几乎完全抑制了出现在自相关函数中的子谐波,同时研究了该算法对稳定重频、抖动重频、参差重频、滑变重频等各类信号的PR I检测性能。计算机仿真结果表明,这种算法适用性较强。

The traditional algorithms for estimating PRI peaks are yielded not only at the location of PRI contained in the original pulse train but also at the location of the integer multiple of the fundamental PRI,which make it difficult to sort pulse trains.The paper introduces PRI transform algorithm for estimating pulse repetition intervals which can suppress the subharmonics in the autocorrelation function almost completely,and investigate the detecting applicability of that algorithm to all kinds of radar signals which change their repetition frequency.Research results basing on computer simulation show that this algorithm is capable of detecting the PRI of various signals.

TN958