| 基于熵测度优化的跳频信号参数估计 |
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| 引用本文： | 郭建涛,刘友安,戈静.基于熵测度优化的跳频信号参数估计[J].信阳师范学院学报(自然科学版),2012,25(3):343-347. |
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| 作者姓名： | 郭建涛 刘友安 戈静 |
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| 作者单位： | 1. 信阳师范学院物理电子工程学院,河南信阳,464000
2. 信阳供电公司,河南信阳,464000 |
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| 基金项目： | 河南省教育厅自然科学基金项目(2011A510021);信阳师范学院高层次人才科研基金项目 |
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| 摘 要： | 详细讨论了采用三阶Flandrin体积归一化熵测度随时频分布核参数的变化规律,给出了典型时频表示进行参数优化的方法,提出了一种基于熵测度的信号相关平滑伪魏格纳分布,对其在跳频信号参数估计中的应用进行了比较和性能分析.仿真结果表明了该量化测度在时频核函数性能评价时的可行性和有效性,基于熵测度优化的跳频信号参数估计有较好的抗噪声能力,可以取得比其他方法更精确的效果.
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| 关 键 词： | 信号分析 熵测度 时频表示 跳频信号 |
Parameter Estimation of Frequency Hopping Signal Using Entropy Measure Optimization |
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| GUO Jian-tao
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LIU You-an
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GE Jing.Parameter Estimation of Frequency Hopping Signal Using Entropy Measure Optimization[J].Journal of Xinyang Teachers College(Natural Science Edition),2012,25(3):343-347. |
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| Authors: | GUO Jian-tao LIU You-an GE Jing |
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| Institution: | 1(1.College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China; 2.Xinyang Power Supply Company,Xinyang 464000,China) |
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| Abstract: | The evolution of third order Renyi entropy with normalization volume versus kernel parameter of time-frequency distribution was discussed.A method of parameter optimization for some time-frequency representations in terms of the criterion was given and the assessment of the distributions was accomplished by evaluating the measure.A novel signal-dependent smoothed pseudo Wigner-Ville distribution using Renyi entropy was proposed.Simulations results showed that this measure was feasible and efficient for evaluating the performance of different kernel,this signal-dependent time-frequency analysis based on the measure was more robust and can yielded a more accurate estimation of frequency-hopping signal than other methods. |
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| Keywords: | signal analysis entropy measure time-frequency representations frequency hopping signals |
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