摘要
面向二进制偏移载波(binary offset carrier,BOC)信号,设计了一种基于副峰叠加的捕获算法。通过构造辅助函数并与BOC信号相关,产生相关曲线,其仅在两个固定位置存在等高副峰,再将副峰移位叠加并与BOC自相关曲线相乘获得单峰捕获曲线,实现无模糊BOC捕获。与现有BOC捕获方法相比,该算法更具普适性,适用于任意阶的BOC信号,且单峰捕获曲线主瓣更窄,捕获概率更高。计算机仿真验证了该算法的性能优势。
A novel acquisition algorithm for binary offset carrier(BOC)signals is developed,based on sub-peak superposition.First,by designing an auxiliary function and correlating it with the BOC signal,a correlation curve with two sub-peaks can be generated.After that,by shifting and superposing the sub-peaks,and then multiplying the superposition result with the BOC autocorrelation curve,a single-peak acquisition curve can be obtained that enables the unambiguous BOC acquisition.Compared with the existing BOC acquisition algorithms,the proposed one is universal and suitable for the BOC signal with any order.Meanwhile,it generates the acquisition curve with a narrower single peak,thereby yielding higher acquisition probability.Numerical simulations demonstrate the superior acquisition performance of the proposed algorithm.
作者
陈林
靳云迪
黄杰
林静然
张亚乾
CHEN Lin;JIN Yundi;HUANG Jie;LIN Jingran;ZHANG Yaqian(The 29th Research Institute,China Electronics Technology Group Corporation,Chengdu 610036,China;School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;Peng Cheng Laboratory,Shenzhen 518055,China;Laboratory of Electromagnetic Space Cognition and Intelligent Control,Beijing 100083,China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2023年第7期2211-2219,共9页
Systems Engineering and Electronics
关键词
二进制偏移载波信号
捕获
副峰叠加
全球卫星导航系统
binary offset carrier(BOC)signal
acquisition
sub-peak superposition
global navigation satellite system(GNSS)
