基于信号成形规律的脉间线性滑变脉冲自动提取算法

摘要

针对密集信号环境中 PRI 线性滑变脉冲序列的自动提取问题，提出一种二次求模-Hough 变换直线提取算法。方法基于 PRI 线性滑变类型雷达脉冲信号的成形规律，借鉴平面变换技术，引入图像处理中的Hough 变换算法，通过二次求模坐标转换和 Hough 变换直线检测，实现 PRI 线性滑变脉冲序列自动提取。仿真试验表明，该算法对线性滑变脉冲序列的平均提取正确率达到92.2%，在经典算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自动提取。%Aiming at the problem of automatic extraction of PRI linear slide pulse sequences in dense signal envi-ronments ,an extraction algorithm named secondary modulus-Hough transformation Straight line extraction al-gorithm was proposed.Based on radar pulse signal shaping law of PRI linear slide type,referencing plane trans-formation technique,introducing Hough transform algorithm in image processing,through the secondary modu-lus coordinate transforming and Hough transform linear detection,the algorithm could extract PRI linear slide pulse sequences automatically .Experimental results showed that the averaged accurate rate of this algorithm for extracting the PRI linear slide pulse sequences was about 92.2%.In the case of classic algorithm failed extrac-ting effectively,PRI linear slide pulse sequences still could be automatically extracted with high accuracy rate by this algorithm.