基于辅助矢量的双支路捕获与跟踪算法

doi:10.12305/j.issn.1001-506X.2026.03.28

Abstract

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:

TN 967.1

E CHEN, Yike GUO, Wenlong XIA, Qinggong GUO. Dual-branch acquisition and tracking algorithm based on auxiliary vectors[J]. Systems Engineering and Electronics, 2026, 48(3): 1039-1049.

Figures/Tables 16

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算法类型	处理增益/dB	抗数据反转	复杂度	适用场景
非相干联合	3	强	低	高动态
相干联合	6	弱	高	静态
差分联合	4.5	中	中	动态

名称	参数/MHz
采样频率	16.384
载波频率	1.023
副载波频率	6.138
伪码频率	1.023
数据频率	0.001

名称	参数
码环阻尼系数$ \xi $	0.707
前后相关器间距$ d $	0.04 T_c
码环噪声带宽/Hz	2
锁相环阻尼系数$ \xi $	0.707
锁相环噪声带宽/Hz	4
锁频环噪声带宽/Hz	120

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Dual-branch acquisition and tracking algorithm based on auxiliary vectors

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