上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (06): 916-920.

• 无线电电子学、电信技术 • 上一篇    下一篇

基于小波域相干边沿检测器的脉冲序列检测与定位算法

易辉跃   

  1. (1.上海无线通信研究中心,上海 200335； 2.中国科学院 上海微系统与信息技术研究所 无线传感网与通信重点实验室,上海 200050)
  • 收稿日期:2011-05-08 出版日期:2012-06-28 发布日期:2012-06-28
  • 基金资助:

    上海市政府间国际科技合作项目(10220712000),上海市科委基础研究重大项目(10DJ1400302),国家科技重大专项项目(2012ZX03003006003,2011ZX0300100703)

Detection and Localization Method of Pulse Sequence Using-Wavelet Transform-Based Coherent Edge Detector

 YI  Hui-Yue   

  1. (1. Shanghai Research Center for Wireless Communications, Shanghai 200335, China; 2. Key Laboratory of Wireless Sensor Network & Communication, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China)
  • Received:2011-05-08 Online:2012-06-28 Published:2012-06-28

摘要： 摘要： 
利用小波变换技术研究了雷达通信共存系统中脉冲信号的有效检测与定位方法.基于小波变换的能量集中特性和脉冲边沿的小波变换系数在小波滤波器支撑集中高度相关的特性，提出了小波域相干边沿检测器，其判决统计量为小波变换系数在不同时延上的自相关值之和.导出了该判决统计量的统计特性与最优求和长度，并提出了基于小波域相干边沿检测器的脉冲信号的有效检测与定位方法.仿真结果表明了基于小波域相干边沿检测的脉冲信号检测与定位方法优于已有方法.

关键词: 脉冲信号, 相干检测, 边沿检测, 小波变换

Abstract: This paper focuses on investigating efficient detection and localization of pulse signals in radarcommunication coexistence systems using wavelet transforms (WT). Based on the properties that the WT coefficients due to edge signals are highly correlated in the region of support (RoS) of wavelet filters while those due to noise do not, this paper presents a WT-based coherent edge detector which generates its decision statistics by integrating the autocorrelation of the WT coefficients in the RoS of wavelet filters, and theoretically analyzes its statistical properties. Based on this WT-based coherent edge detector, an efficient pulse detection and localization algorithm is proposed. Finally, simulations are carried out to illustrate the performance of the proposed pulse detection and localization algorithm.
 

Key words: pulse signal, coherent detection, edge detection, wavelet transform

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