常用脉冲重复间隔估计算法

雷达信号分选是电子战系统(EW)与反辐射导弹(ARM)的关键技术,脉冲重复间隔(PRI)是信号分选与识别的一个重要参数,它决定了雷达的最大无模糊距离和最大无模糊径向速度。目前以脉冲序列的自相关函数为基础,利用脉冲到达时间(TOA)提出了多种脉冲重复间隔估计算法。本文介绍了几种常用算法的原理,讨论了各算法的缺陷,并给出了PRI变换应用于抖动PRI序列时的计算机仿真结果。最后分析了各种算法的性能与适用范围。

Current Algorithms for Estimating Pulse Repetition Intervals

Radar signal sorting is the key technology of Electronic Warfare (EW) system and Anti Radiation Missile (ARM). The pulse repetition interval (PRI) is one of the important parameters of signal sorting, which determines the maximum unambiguous range and radial velocity. Various algorithms have been developed to estimate the PRI of an interleaving pulse train, which are based on time of arrival (TOA) analysis and auto correlation function of the pulse train. This paper presents the current algorithms, discusses their drawbacks, and gives the computer simulation results of the PRI transform algorithm apply to PRI jitter sequences. In the end, we analyze the characteristics and application ranges of these algorithms.