电讯技术2018，Vol.58Issue(6)：661-667,7.DOI:10.3969/j.issn.1001-893x.2018.06.008
一种利用压缩感知改进的PMF-FFT扩频捕获算法
An Improved PMF-FFT Spread Spectrum Signal Acquisition Algorithm Based on Compressed Sensing
王凯 1吴斌 1汪勃1
作者信息
- 1. 北京跟踪与通信技术研究所,北京100094
- 折叠
摘要
Abstract
To alleviate the signal-receiving pressure while achieving rapid acquisition for Direct-Sequence Spread Spectrum( DSSS) signal,this paper proposes a novel acquisition algorithm named Compressed Sens-ing Partial Matched Filter-Fast Fourier Transform( CSPMF-FFT) algorithm,which is combined with the Partial Matched Filter-Fast Fourier Transform( PMF-FFT) algorithm and Compressed Sensing( CS) theo-ry. In this method,signal's sparsity is analyzed and the signal is compressed. Then the original signal is re-constructed from compressed values, and thus the code phase and Doppler frequency can be estimated through peak information. Theoretical analysis and simulation results show that the CSPMF-FFT algorithm can effectively capture signals and share the advantages of few number of correlators and low computation of FFT compared with the PMF-FFT algorithm,which lays a foundation for the research on spread spectrum signal processing based on CS.关键词
航天测控通信/直接序列扩频信号/信号捕获/压缩感知/部分匹配滤波/快速傅里叶变换Key words
space TT&C and communication/direct-sequence spread spectrum( DSSS) signal/signal ac-quisition/compressed sensing/partial matched filter( PMF)/fast Fourier transform( FFT)分类
信息技术与安全科学引用本文复制引用
王凯,吴斌,汪勃..一种利用压缩感知改进的PMF-FFT扩频捕获算法[J].电讯技术,2018,58(6):661-667,7.
