一种高动态长伪码信号的捕获方法  

A High-dynamic Long Pseudo-Noise Signal Capture Method

作　　者：李程 LI Cheng(No.54 Institute of CETC,Shijiazhuang Hebei 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《通信技术》2021年第4期792-797,共6页Communications Technology

摘　　要：高动态长伪码信号的捕获一直是卫星通信研究的难点,近来广泛应用的部分匹配滤波-快速傅立叶变换(Partial Match Filter-Fast Fourier Transform,PMF-FFT)算法能够解决其中部分问题,但其对FPGA的资源要求较多。提出一种优化的PMF-FFT实现方法,将部分匹配滤波器组进行适度折叠,在资源受限的条件下实现了长伪码信号的快速捕获。简单分析了算法原理,重点阐述资源优化的实现方法。经工程实测,该方法性能良好,工作稳定可靠。The capture of high dynamic long pseudo-noise signals has always been a difficult point in satellite communication research.The Partial Match Filter-Fast Fourier Transform(PMF-FFT)algorithm can solve some of these problems,but it requires more resources for FPGA.An optimized PMF-FFT method is proposed.By folding the match filter banks,the long pseudo-noise signal is captured under the condition of resource limitation.The principle of the algorithm is analyzed in brief and the method of register resource optimization is emphasized in the paper.According to actual tests,the method has good performance and is stable and reliable.

关 键 词：PMF-FFT 折叠匹配滤波器 高动态 长伪码捕获 

分 类 号：TN914.42[电子电信—通信与信息系统]