基于小波变换的扩频系统PN码捕获研究  

Spread Spectrum PN Code Acquisition in System Based on Wavelet Transform

作　　者：王晓蕾[1] 王艳涛[1] 张洪全[1] 

机构地区：[1]黑龙江科技学院计算机与信息工程学院,黑龙江哈尔滨150027

出　　处：《通信技术》2009年第3期73-75,共3页Communications Technology

基　　金：黑龙江科技学院引进人才启动资金资助项目(编号:06-118)

摘　　要：由于小波分析具有多分辨率的特点,使得利用小波分析的工具在对突变信号的检测上提取信息方面有着很强的优势。利用小波的这一性质提出了一种小波捕获的方法。通过实际仿真证明B样条小波对有噪声污染的调制信号和白噪声信号的检测更优越;并基于Harr小波提出了一种步进快速捕获方法,通过理论分析,证明该方法可有效减少捕获时间。Because wavelet analysis has the char in extracting the message from signal by wavelet ana acteristic of multi-resolution, there is a strong advantage lysis in signal singularity detection. The paper tells of a wavelet acquisition method by using the wavelet characteristics. The B spline wavelet is more superior in detecting the modulation signal polluted by the noise and the white noise signal. And based on the Harr wavelet, a type of more fast acquisition method is proposed. Theoretical analysis indicates that this method could effectively reduce the acquisition time.

关 键 词：PN码捕获 小波分析 多分辨率 小波捕获 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]