| 色噪声背景下正弦频率估计的互高阶谱LS方法 |
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| 引用本文： | 马彦,石要武,戴逸松.色噪声背景下正弦频率估计的互高阶谱LS方法[J].系统工程与电子技术,2001,23(5):41-43. |
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| 作者姓名： | 马彦 石要武 戴逸松 |
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| 作者单位： | 吉林工业大学信息学院, |
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| 基金项目： | 国家自然科学基金资助课题(F010202-69870212) |
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| 摘 要： | 在互功率谱估计方法和高阶统计量理论相结合的基础上，提出了现代互高阶谱估计理论。首先推导并建立了基于互四阶累积量的Yule-Walker方程，并在此基础上提出了互四阶累积量的最小二乘（LS）修正Yule-Walker方程方法。仿真结果表明，在混合色噪声背景下，在信噪比达到-5dB的情况下，该方法仍能有效地抑制相关的和不相关的色噪声，具有良好的频率估计性能。
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| 关 键 词： | 信号处理 噪声干扰 功率谱 |
| 文章编号： | 1001-506X(2001)05-0041-03 |
| 修稿时间： | 2000年5月27日 |
Frequencies Estimation of Sinusoidal Embedded in Colored Noises via
Cross-High-Order Cumulant LS Method |
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| Ma Yan,Shi Yaowu,Dai Yisong.Frequencies Estimation of Sinusoidal Embedded in Colored Noises via
Cross-High-Order Cumulant LS Method[J].System Engineering and Electronics,2001,23(5):41-43. |
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| Authors: | Ma Yan Shi Yaowu Dai Yisong |
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| Institution: | Ma Yan Shi Yaowu Dai Yisong Information Science and Engineering Institute,Jilin University of Technology,Changchun 130025 |
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| Abstract: | Harmonic retrieval problem considered here concerns with the estimation of the sinusoidal frequencies in hybrid col-red noises. It is applied to the cross-spectral theory and high-order self-spectral theory now. In this paper, Yule-Walker equation based on cross-fourth-order cumulant is developed first. And least square(LS) modified Yule-Walker (LS-Yule-Walker) method is also provided. Simulation results show that the method is effective to estimation sinusoid signal frequencies from hybrid colored noises and has good performance. |
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| Keywords: | Signal processing Noise jamming Power spectrum |
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