PL与PS交互式北斗卫星信号快速捕获优化设计与实现  

Optimization Design and Implementation of PL and PS Interactive BeiDou Satellite Signal Fast Acquisition

作　　者：孙昭行 戴振东 傅瑾瑜 计旭 张念程 SUN Zhaoxing;DAI Zhendong;FU Jinyu;JI Xu;ZHANG Niancheng(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Unit 93145 of the People's Liberation Army,Shanghai 201109)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]中国人民解放军93145部队,上海201109

出　　处：《飞控与探测》2024年第5期67-74,共8页Flight Control & Detection

摘　　要：设计了一种基于PSOC平台的累积降速并行快速傅里叶变换(Fast Fourier Transform,FFT)捕获优化方法。该方法利用PSOC平台PL端逻辑实现与PS端时序控制交互式分工协作,采用累积降速将降频后的数字基带信号作并行FFT运算,快速完成北斗(BeiDou,BD)卫星信号捕获。通过矩阵运算工具仿真和FPGA逻辑运算仿真工具进行仿真,结果表明基于PSOC平台PL与PS交互式卫星信号快速捕获方法在节约硬件资源同时,能快速完成对BD卫星信号的捕获。The fast acquisition of BD satellite signal is the key technology to determine the fast positioning of the satellite navigation receiver.Aiming at this technology,a fast acquisition method based on the PSOC platform for the cumulative deceleration and parallel FFT is designed in this paper.The method uses PSOC PL-side logic to realize interactive division of labor and coordination with PS-side timing control,and uses the cumulative speed reduction method to perform parallel FFT calculation on digital baseband signals after frequency reduction,and the BD satellite signals are captured quickly.The design has a compact structure and parallel flow processing,which improves the code running efficiency and reduces the PL-side resource consumption.The simulation was conducted using matrix operation tools and FPGA logic operation tools,and the results showed that the interactive satellite signal acquisition method based on PSOC platform PL and PS can quickly capture BD satellite signals while saving hardware resources.

关 键 词：快速傅里叶变换捕获 累积降速 PSOC平台 PL端逻辑实现 PS端实时控制 

分 类 号：TN911.72[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]