| 基于PWHT的LFM-PRBC雷达信号截获与特征提取 |
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| 引用本文： | 向崇文,王泽众,黄宇,刘锋.基于PWHT的LFM-PRBC雷达信号截获与特征提取[J].中国电子科学研究院学报,2012,7(3):265-269. |
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| 作者姓名： | 向崇文 王泽众 黄宇 刘锋 |
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| 作者单位： | 1. 海军航空工程学院电子信息工程系,山东烟台264001 中国人民解放军91960部队,广东汕头515074
2. 海军航空工程学院电子信息工程系,山东烟台,264001 |
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| 摘 要： | 线性调频-伪随机二相编码调相复合调制雷达信号(LFM-PRBC)融合了两者的优点,弥补了单一信号的不足,是一种性能较好的低截获概率雷达信号,给传统雷达截获接收机带来挑战。提出了将周期Wigner Hough变换(PWHT)与相关检测相结合的方法,通过在信号的周期WignerHough域搜索峰值,检测复合调制雷达信号并实现其特征提取。通过理论分析和计算机仿真验证,该方法能实现高斯白噪声背景下低信噪比复合调制信号的截获与特征提取。
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| 关 键 词： | 复合调制 低截获概率 周期WignerHough变换 特征提取 |
Interception and Feature Extraction of LFM-PRBC Combined Modulation Radar Signal Based on PWHT |
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| XIANG Chong-wen,WANG Ze-zhong,HUANG Yu,LIU Feng.Interception and Feature Extraction of LFM-PRBC Combined Modulation Radar Signal Based on PWHT[J].Journal of China Academy of Electronics and Information Technology,2012,7(3):265-269. |
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| Authors: | XIANG Chong-wen WANG Ze-zhong HUANG Yu LIU Feng |
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| Affiliation: | 1 (1.Department of Electronic and Information Engineering,Naval Aeronautical Engineering Institute, Shandong Yantai 264001,China; 2.Unit 91960 of PLA,Guangdong Shantou 515074,China) |
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| Abstract: | Linear frequency modulation-pseudo-random binary codes phase modulation combined signal(LFM-PRBC) combines the advantages of both signals and makes up for shortcoming of a single signal.As a relative ideal low probability of intercept radar signal(LPI),it should surely give a serious challenge to traditional radar intercept receiver.A novel method composed of periodic Wigner Hough transform(PWHT) and correlation detection is presented.By use of peak detection in periodic Wigner Hough domain,feature extraction is completed.Through theoretical analysis and computer simulation,this method can achieve interception and feature extraction of combined modulation radar signal with a low signal to noise ratio(SNR)in Gaussian white noise background. combined modulation;low probability of intercept;periodic Wigner Hough transform;feature extraction |
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| Keywords: | combined modulation low probability of intercept periodic Wigner Hough transform feature extraction |
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