| 一种同步组网跳频信号的盲分离方法 |
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| 引用本文： | 耿 健,杨 威.一种同步组网跳频信号的盲分离方法[J].电讯技术,2018,58(12). |
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| 作者姓名： | 耿 健 杨 威 |
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| 作者单位： | 南昌理工学院 电子与信息学院，南昌 330044,南昌理工学院 电子与信息学院，南昌 330044 |
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| 摘 要： | 针对多路混合的同步组网跳频信号，提出了一种基于时频分析的盲分离方法。首先利用同步组网的各跳频信号中各信号跳时相同、跳周期相同等特点，利用平滑伪魏格纳分布（SPWVD）提取信号在时频分布上的特征值。在此基础上，采用基于短时傅里叶变换（STFT）时频比方法对同步组网跳频电台信号进行分离。仿真实验表明，这种方法能有效分离同步组网电台跳频信号，且在跳频间隔较小时，依然具有良好的分离效果。
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| 关 键 词： | 同步组网 跳频信号 盲源分离 时频分布 |
A blind separation method for synchronous-networking frequency hopping signals |
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| GENG Jian and YANG Wei.A blind separation method for synchronous-networking frequency hopping signals[J].Telecommunication Engineering,2018,58(12). |
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| Authors: | GENG Jian and YANG Wei |
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| Affiliation: | School of Electronics and Information,Nanchang Institute of Technology,Nanchang 330044,China and School of Electronics and Information,Nanchang Institute of Technology,Nanchang 330044,China |
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| Abstract: | A novel method for seperating synchronous-networking frequency hopping(FH) signals based on time-frequency analysis is proposed.Since the hop rate and hop period of synchronous-networking FH signals are the same,a method on smoothed-pseudo Wigner-Ville Distribution(SPWVD) is applied to extract the characteristics of signals.Then the blind separation algorithm of FH signals with time-frequency ration of matrix based on Short Time Fourier Transform(STFT) is improved.Simulation results show that the proposed algorithm is effective in separation of synchronous-networking FH signals,even though the interval between FH signals is relatively small. |
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| Keywords: | synchronous-networking frequency hopping signals blind separation time-frequency analysis |
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