基于小波包-循环互相关函数的时延估计  

Time delay estimation based on wavelet package and cyclic cross-correlation function

作　　者：张雯雯 司锡才[1] 柴娟芳[1] 李利 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《电子技术应用》2007年第12期101-104,共4页Application of Electronic Technique

基　　金：船舶工业国防科技预研项目(05J3.7.2)

摘　　要：在介绍循环平稳信号互相关函数的基础上,推导了调幅-线性调频发射信号与观测信号之间的循环互相关函数表达式,并提出了一种在强背景噪声的多径条件下,基于小波包-循环互相关函数的时延估计算法。仿真结果验证了该方法的准确性和有效性。This paper introduces the cross-correlation function of cycle stationary signal, deduces the expression of cyclic cross-correlation function of AM-LFM signal between the transmitter end and receiver end, and proposes the arithmetic of time delay estimation based on the wavelet package and cyclic cross-correlation function. The simulation results show that this method can estimate the time delay accurately and effectively.

关 键 词：小波包分析 消噪 循环互相关 调幅-线性调频 时延估计 

分 类 号：TN914.42[电子电信—通信与信息系统]