基于Hough变换的伪码调相信号检测算法  

A Target Detection Algorithm Based on Hough Transform of PRC-CW Signal

作　　者：芦永强 韩壮志 张宏伟 LU Yongqiang;HAN Zhuangzhi;ZHANG Hongwei(The Army Engineering University,Shijiazhuang 050003,China)

机构地区：[1]陆军工程大学,河北石家庄050003

出　　处：《雷达科学与技术》2018年第1期99-103,共5页Radar Science and Technology

摘　　要：由于伪码调相信号目标多普勒频率的连续展宽特性,在进行弹道测量时,回波目标在时频图中以"直线"形式出现,传统的基于点检测的恒虚警检测算法会产生大量的虚警。鉴于此,根据伪码调相信号目标多普勒频谱特性,提出了一种基于Hough变换直线检测的目标检测方法。该方法在传统的Hough变换基础上进行了优化,根据回波目标的"直线"特性实现目标检测。将两种算法同时对实测数据进行处理,对比结果表明,基于Hough变换的目标检测算法能够准确地分辨目标并提取目标信息。Due to the continuous-broadening characteristic of PRC-CW radar echo signal,the target appears in the form of“straight line”in time-frequency map in trajectory measurement.The traditional CFAR detection algorithm based on point detection will generate a large number of false alarms.In view of this,a target detection method based on Hough transform linear detection is proposed according to the target Doppler spectrum characteristics of PRC-CW radar echo signal.The method is optimized on the base of the traditional Hough transform and the target detection is realized according to the“straight line”characteristic of the target echo.The two algorithms are used to process the measured data at the same time.The comparison results show that the target detection algorithm based on Hough transform can distinguish the target accurately and extract the target information.

关 键 词：伪码调相连续波雷达 多普勒频率 弹道测量 时频分析 HOUGH变换 

分 类 号：TN957.51[电子电信—信号与信息处理] TN206[电子电信—信息与通信工程]