| 基于S变换的跳频信号参数估计 |
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| 引用本文： | 武开有,马绪,沈良,徐以涛.基于S变换的跳频信号参数估计[J].军事通信技术,2008(3). |
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| 作者姓名： | 武开有 马绪 沈良 徐以涛 |
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| 作者单位： | 解放军理工大学通信工程学院研究生1队;解放军理工大学通信工程学院无线通信系; |
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| 摘 要： | 对跳频信号的时频域进行分析和参数估计是识别、跟踪及干扰跳频信号的重要基础。针对接收到的未知任何先验参数的跳频信号,提出了一种基于S变换(S-transform)的跳频信号参数估计算法,通过S变换,能正确估计出跳频信号的跳频周期、跳变时刻及跳频图案。仿真结果表明,与平滑伪Wigner-Ville分布(SPWVD)进行比较,该算法能够在低信噪比条件下,在时频域中有较好的解析能力,提高了跳频信号参数估计的准确性。
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| 关 键 词： | 跳频信号 时频分析 参数估计 |
Parameter Estimation of Frequency-hopping Signals Based on S-transform |
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| WU Kai-you,MA Xu,SHEN Liang,XU Yi-tao.Parameter Estimation of Frequency-hopping Signals Based on S-transform[J].Journal of Military Communications Technology,2008(3). |
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| Authors: | WU Kai-you MA Xu SHEN Liang XU Yi-tao |
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| Institution: | WU Kai-you1,MA Xu1,SHEN Liang2,XU Yi-tao2(1.Postgraduate Team 1 ICE,PLAUST,Nanjing 210007,China,2.Department of Radio Communication ICE,PLAUST) |
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| Abstract: | It is crucial to study the features of Frequency-Hopping(FH) signals in both time and frequency domain and estimate the parameters of received FH signals in order to detect and jam the FH signals.A new scheme for estimating the parameters of received FH signals was proposed based on S-transform without knowing any prior knowledge.The method used S-transform of FH signals to estimate its transmission parameters such as hop duration,hop timing and hopping frequency pattern.Compared with SPWVD(Smoothed Pseudo ... |
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| Keywords: | frequency-hopping signal time-frequency analysis parameter estimation |
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