基于PRI变换的雷达脉冲序列搜索方法  

Sequence searching methods of radar signal pulses based on PRI transform algorithm

作　　者：陈涛[1] 王天航 郭立民[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2017年第6期1261-1267,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(61571146)资助课题

摘　　要：在面对复杂的雷达信号环境时,准确搜索到雷达脉冲可以为雷达调制特征识别、测向定位提供有效的数据基础,对此提出了一种基于脉冲重复周期(pulse repetition interval,PRI)变换法的脉冲序列搜索办法。利用PRI变化法在高脉冲丢失率情况下,求出最有可能的PRI,根据此PRI值,结合本文提出的序列搜索方法对脉冲流中的脉冲进行套取。通过双阈值搜索,减少由于脉冲密度过大导致阈值设定不当而搜索到错误脉冲的情况。最后通过数据仿真,能够有效分选出参差、抖动、捷变频等雷达信号。In the complicated radar signal environment, sorting the radar signal pulse correctly is essential to provide efficient data for radar pulse modulation feature recognition and direction finding and localization. A sequence searching method based on pulse repetition interval （PRI） transform algorithm is proposed. The most possible PRI of the target radar is got with the PRI transform under the high pulse losing probability. With the proposed method, the pulse of the PRI is extracted from the pulse flow. By double threshold searching, this method minimizes the possibility of sorting the false pulse due to the high pulse density and the large threshold value. Finally, the simulation of the method is made to sort the target radar including staggered radar, jittered radar and frequency agility radar pulse effectivelv.

关 键 词：信号分选 脉冲重复周期变换法 序列搜索 

分 类 号：TN95[电子电信—信号与信息处理]