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

摘要/Abstract

摘要：

面向二进制偏移载波（binary offset carrier，BOC）信号捕获跟踪算法功率利用率低、抗噪性能差的难题，提出利用辅助矢量结合双支路联合捕获跟踪算法。首先设计可配置辅助矢量生成方法，合成无副峰曲线，再结合双支路联合捕获跟踪，显著提升功率利用率和抗噪声性能。仿真结果表明，算法在实现副峰消除的同时，能够维持较高的捕获精度，在信噪比为?20 dB的条件下，捕获概率超过90%，码相位跟踪精度控制在1/2 000个码片以内。与现有方法相比，所提算法实现了BOC信号处理中模糊性消除与功率优化的统一，提高了抗噪声性能，为新一代导航接收机设计提供了理论支撑。

关键词: 二进制偏移载波, 联合捕获, 跟踪, 辅助矢量, 高精度

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

中图分类号:

TN 967.1

陈娥, 郭乙颗, 夏文龙, 郭庆功. 基于辅助矢量的双支路捕获与跟踪算法[J]. 系统工程与电子技术, 2026, 48(3): 1039-1049.

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.

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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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