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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。
At present, more and more part of matched filtering and fast Fourier transform (PMF-FFT) are used in the spread spectrum measurement and control communication system to achieve the acquisition of the spread spectrum signal. Here PMF-FFT is used to capture the spread spectrum signal Algorithm principle, process and performance, and make full use of multi-channel parallel processing architecture, proposed two different implementations of multi-channel parallel acquisition in frequency domain (frequency slot) and multi-channel parallel acquisition in time domain (pseudo code division) based on PMF- Method to meet the different spread spectrum measurement and control communication system on the pseudo-code capture performance application needs.