Unambiguous Compression Acquisition for BOC-Signal at Low Sampling Rate

IF 0.4 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Communications Technology and Electronics Pub Date : 2023-12-13 DOI:10.1134/s1064226923100212

H. Li, T. F. Liu, H. Y. Sun, S. L. Lian, K. A. Budunova, V. F. Kravchenko, Z. S. Sun, Y. Zheng

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Abstract—In the modernization of Global Navigation Satellite System (GNSS), Binary offset carrier (BOC) modulation signal has been applied as a new modulation method, but it also brings the complexity of signal acquisition process. To reduce the data required for BOC signal acquisition and eliminate acquisition ambiguity, an unambiguous compression acquisition method is proposed. The core ideas are as follows: (1) Based on the principle of disambiguation by side-peak superposition, a matrix operation model is constructed for signal sparse transformation; (2) Extract the basic elements of compressed sensing (CS) theory, select a measurement matrix based on singular value decomposition (SVD) for compression measurement, and use the Orthogonal Matching Pursuit (OMP) algorithm for signal reconstruction. The simulation results show that the method can completely remove the side-peaks of the acquisition curve. The acquisition performance is more than 3 dB better than the compressed sensing acquisition method based on singular value decomposition (SVD-CS). The sampling rate is more than 57% lower than that of the BOC signal acquisition based on side-peak superposition (BASS), overcoming the limitation of Nyquist sampling theorem. Finally, it can be explained that the proposed method can realize the unambiguous acquisition of BOC signal under low sampling rate.

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低采样率下对 BOC 信号的清晰压缩采集

摘要:在全球卫星导航系统(GNSS)现代化建设中，二进制偏置载波(BOC)调制信号作为一种新的调制方式得到了应用，但它也带来了信号采集过程的复杂性。为了减少BOC信号采集所需的数据量，消除采集歧义，提出了一种无二义压缩采集方法。其核心思想如下:(1)基于旁峰叠加消歧原理，构建信号稀疏变换的矩阵运算模型;(2)提取压缩感知(CS)理论的基本元素，选择基于奇异值分解(SVD)的测量矩阵进行压缩测量，并使用正交匹配追踪(OMP)算法进行信号重构。仿真结果表明，该方法可以完全去除采集曲线的侧峰。与基于奇异值分解(SVD-CS)的压缩感知采集方法相比，该方法的采集性能提高了3 dB以上。与基于侧峰叠加(BASS)的BOC信号采集相比，采样率降低了57%以上，克服了Nyquist采样定理的限制。最后，可以说明该方法可以在低采样率下实现BOC信号的无二义采集。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Communications Technology and Electronics 工程技术-电信学

CiteScore

1.00

自引率

20.00%

发文量

170

审稿时长

10.5 months

期刊介绍： Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.