重频滑变脉冲的序列时延——样本子图外推提取算法  

Pulse Sequence Time Delay-Pulse Subpattern Extrapolation Extraction Algorithm of PRI Slide Pulse Sequences

作　　者：孟祥豪[1] 罗景青[1] 马贤同[1] 

机构地区：[1]解放军电子工程学院电子对抗与信息处理重点实验室,安徽合肥230037

出　　处：《信息与控制》2015年第5期538-544,共7页Information and Control

基　　金：国家自然科学基金资助项目(60801044);预研基金资助项目(9140A21030209JB3901)

摘　　要：针对交迭脉冲流中重频滑变脉冲序列的提取问题,提出一种脉冲序列时延—样本子图外推提取算法.该算法基于滑变信号成形规律和滑变脉冲序列的样本子图特点,通过全脉冲序列整体时延,求取相关函数峰值点,进而提取滑变信号的样本子图;并通过样本子图外推搜索的方法,提取全脉冲序列中该样本子图对应的脉冲序列,实现滑变信号的提取.实验结果表明该算法对线性滑变脉冲序列的平均提取率达到95%以上.在经典重频(pulse repetition interval,PRI)变换法无法有效提取的情况下,该算法仍能以较高正确率实现对PRI线性滑变脉冲信号的提取.A pulse sequence time delay-pulse subpattern extrapolation algorithm is proposed to solve the extraction problem of pulse repetition interval （PR1） linear slide pulse sequences in dense signal environments. The algorithm is based on the radar pulse signal shaping law and the pulse subpattern sequence feature of PRI linear slide type signals. By delaying the overall pulse sequences, and calculating the con＇elation function peaks, the algorithm is then able to extract the pulse subpattern sequence of PRI slide pulse sequences and whole corresponding PRI linear slide pulse sequences, by extrapolating and searching for the pulse subpattem sequence. Experimental results show the averaged accurate rate of the proposed algorithm to be about 95% when extracting PRI linear slide pulse sequences. The classic algorithm is unable to extract effectively, but using the algorithm proposed here it is possible to automatically extract PRI linear slide pulse sequences with a high accuracy rate.

关 键 词：信号成形规律 序列时延 重频滑变 样本子图外推 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程] V234.2[自动化与计算机技术—控制科学与工程]