Systems Engineering and Electronics ›› 2026, Vol. 48 ›› Issue (3): 1039-1049.doi: 10.12305/j.issn.1001-506X.2026.03.28

• Guidance, Navigation and Control • Previous Articles    

Dual-branch acquisition and tracking algorithm based on auxiliary vectors

E CHEN, Yike GUO, Wenlong XIA, Qinggong GUO   

  1. College of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China
  • Received:2025-05-14 Online:2026-03-25 Published:2026-04-13
  • Contact: Wenlong XIA

Abstract:

To address the challenges of low power utilization and poor noise resistance in binary offset carrier (BOC) signal capture and tracking algorithms, a dual-branch joint acquisition and tracking algorithm using auxiliary vectors is proposed. Firstly, a configurable auxiliary vector generation method is designed to synthesize a vice peak curve, and then combined with dual-branch joint acquisition and tracking, significantly improving power utilization and noise resistance performance. The simulation results show that the algorithm can maintain high acquisition accuracy while achieving vice peak 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 1/2 000 chips. Compared with existing methods, the proposed algorithm achieves the unity of ambiguity elimination and power optimization in BOC signal processing, improves noise resistance performance, and provides theoretical support for the design of new generation navigation receivers.

Key words: binary offset carrier (BOC), joint acquisition, tracking, auxiliary vectors, high precision

CLC Number: 

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