一种基于余数周期的 PRI精确估计算法

针对传统脉冲重复间隔（PRI）分选算法在估计PRI方面存在的不足，提出了一种对PRI周期信号的周期进行精确估计的算法。该算法首先从待分选脉冲序列中提取出属于一部雷达的脉冲样本，然后利用同余方程的余数周期性质对该雷达脉冲序列的PRI进行精确的估计。相对于传统的PRI估计算法，该算法有效地消除了TOA量化误差对PRI估计造成的影响，可以精确地估计出雷达脉冲序列的准确 PRI数值，从而能够更好地满足信号分选算法的处理需求。理论推导及仿真实验均表明了该算法的有效性。

An accurate estimation algorithm for PRI based on remainder of the cycle

For the defects in estimating pulse repetition interval (PRI) of traditional PRI de‐interleaving al‐gorithms ,a new algorithm of estimating the period of PRI periodic signals is put forward .The algorithm firstly extracts the pulse sample sequence of certain radar from the raw pulse sequence ,and then executes precise period estimation process based on the remainder of the cycle .Compared with the traditional PRI estimating algorithms ,this algorithm accurately estimates the PRI with TOA quantization error removing , which satisfies the requirement of the de‐interleaving process . Both theoretical derivation and simulation results verify the validity of the proposed algorithm .