Fast acquisition of L2C CL codes based on combination of hyper codes and averaging correlation

查看全文 作　　者：Qingxi [1]Zeng;Linlin [1]Tang;Pengna [1]Zhang;Ling [2]Pei

机构地区：[1]Vehicle Electronic Laboratory, Nanjing University of Aeronautics and Astronautics;[2]Shanghai Key Laboratory of Navigation and Location Based Service, Shanghai Jiao Tong University

出　　处：《Journal of Systems Engineering and Electronics》索引2016年第27卷第2期,共11页

基　　金：supported by the Fundamental Research Fund for the Central Universities(NS2013016) 摘　　要：This paper provides a direct and fast acquisition algorithm of civilian long length(CL) codes in the L2 civil(L2C) signal. The proposed algorithm simultaneously reduces the number of fast Fourier transformation(FFT) correlation through hyper code technique and the amount of points in every FFT correlation by using an averaging correlation method. To validate the proposed acquisition performance, the paper applies this algorithm to the real L2C signal collected by the global positioning system(GPS) L2C intermediate frequency(IF) signal sampler—SIS100L2C. The acquisition results show that the proposed modified algorithm can acquire the code phase accurately with less calculation and its acquisition performance is better than the single hyper code method. 关键词：快速捕获 CL 相关码组合和快速傅里叶变换平均捕获算法全球定位系统

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Fast acquisition of L2C CL codes based on combination of hyper codes and averaging correlation

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