基于PMF-FFT的扩频信号多通道并行捕获  

Multi-channel Acquisition of Spread Spectrum Signal based on PMF-FFT

作　　者：方科[1] 

机构地区：[1]中国电子科技集团公司第十研究所,四川成都610036

出　　处：《通信技术》2013年第7期16-18,共3页Communications Technology

摘　　要：目前在扩频测控通信系统中越来越多地采用了部分匹配滤波和快速傅里叶变换(PMF-FFT)的方法来实现扩频信号的捕获,这里分析了PMF-FFT实现扩频信号捕获的算法原理、过程和性能,充分利用多通道并行处理架构,提出了基于PMF-FFT的频域(频率分槽)多通道并行捕获和时域(伪码分区)多通道并行捕获两种不同的实现方法,以满足不同的扩频测控通信系统对伪码捕获性能的应用需求。PMF-FFT （Partial Matched Filters combined with Fast Fourier Transform） is increasingly applied in spread spectrum TT＆C system for achieving the acquisition of spread spectrum signal. This paper analyzes theory, process and performance of PMF-FFT in acquiring spread spectrum signal. In order to match different acquisition demands of spread spectrum TT＆C system, two implementations are proposed, which make full use of the multi-channel parallel processing architecture based on PMF-FFT by Multi-channel parallel acquisition in frequency and Multi-channel parallel acquisition in time-domain.

关 键 词：扩频 PMF-FFT 多通道 捕获 

分 类 号：TN914.4[电子电信—通信与信息系统]