基于辅助矢量的双支路捕获与跟踪算法

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中图分类号：TN967.1 文献标志码：A DOI： 10.12305/j.issn.1001-506X.2026.03.28

Dual-branch acquisition and tracking algorithm based on auxiliary vectors

CHEN E， GUO Yike， XIA Wenlong*，GUO Qinggong （College of Electronics and Information Engineering，Sichuan University，Chengdu 6l0065，China）

Abstract：Toaddressthechalenges oflow power utilization and poor noise resistance in binaryofset carrier （BOC） signalcaptureand trackingalgorithms，adual-branch jointacquisitionand trackingalgorithmusingauxiliaryvectorsis proposed. Firstly，a configurable auxiliary vector generation method isdesigned to synthesize a vicepeak curve，and then combined with dual-branch joint acquisition and tracking，significantlyimproving power utilizationand noiseresistance performance.Thesimulationresultsshowthatthealgorithmcanmaintainhighacqusitionaccuracywhileachievingvicepeak elimination.Under the condition of a signal-to-noise ratio of -20 dB，the acquisition probability exceeds 90% ，and the code phase tracking accuracy is controlled within 1/2000 chips. Compared with existing methods， the proposed algorithm achieves theunity ofambiguity elimination and power optimization in BOC signal procesing， improves noise resistance performance， and provides theoretical support for the design of new generation navigation receivers.

Keywords：binary offset carrier（BOC）； joint acquisition； tracking；auxiliary vectors；high precision

0 引言

二进制相移键控（binaryphase shiftkeying，BPSK）调制技术因实现简单、捕获与跟踪算法成熟等优势，曾被广泛应用于导航信号中[。（剩余18009字）