High Dynamic Dual Binary Offset Carrier Signal Acquisition in Narrowband Interference Environment

被引:0
|
作者
Zhang T. [1 ]
Fang Z. [1 ]
Wang X. [1 ]
Wang R. [1 ]
机构
[1] School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing
关键词
fractional Fourier transform; minimum description length criterion; narrowband interference; ratio correct; singular value decomposition;
D O I
10.13190/j.jbupt.2022-010
中图分类号
学科分类号
摘要
To solve the difficulty in capturing highly dynamic double-binary offset carrier signals in narrowband interference environment, a capture algorithm combining singular value decomposition, the minimum description length criterion, discrete polynomial phase transformation, partial matching filter and fractional Fourier transform plus spectrum correction is proposed. First, the singular value decomposition is used to divide the signal containing narrowband interference into signal subspace and interference subspace, and the minimum description length criterion is used to determine the boundary between target signal and interference signal, and the interference suppression is adaptively completed. Then, the order algorithm is used to determine the dynamic order of the signal to complete the downgrading. Finally the capture of the signal containing only the first-order Doppler rate of change is completed. The simulation results show that the proposed algorithm can easily complete the precise suppression of interference while retaining the original signal characteristics, and the performance is stable. In addition, the proposed capture algorithm improves the capture probability by about 2 dB gain compared with uncorrected under the same conditions. © 2023 Beijing University of Posts and Telecommunications. All rights reserved.
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页码:50 / 56
页数:6
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