基于副峰叠加的BOC导航信号捕获算法

doi:10.12305/j.issn.1001-506X.2023.07.32

Abstract

Abstract:

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.

Key words: binary offset carrier (BOC) signal, acquisition, sub-peak superposition, global navigation satellite system (GNSS)

CLC Number:

TN967.1

Lin CHEN, Yundi JIN, Jie HUANG, Jingran LIN, Yaqian ZHANG. Acquisition algorithm for BOC navigation signals based on sub-peak superposition[J]. Systems Engineering and Electronics, 2023, 45(7): 2211-2219.

Figures/Tables 15

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Table 1

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算法	是否需要辅助序列	形成辅助相关曲线是否需要移位	消除副峰是否需要系数调整
ASPeCT	否	否	是
GRASS	是	否	是
Yan	否	是(1/N码片)	否
BASS	是	是(0.5码片)	否

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Acquisition algorithm for BOC navigation signals based on sub-peak superposition

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