| 基于互高阶累积量与信号空间结构特性的谐波恢复方法 |
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| 引用本文： | 于志强,杨杰,胡英.基于互高阶累积量与信号空间结构特性的谐波恢复方法[J].上海交通大学学报,2001,35(9):1325-1328. |
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| 作者姓名： | 于志强 杨杰 胡英 |
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| 作者单位： | 上海交通大学图像处理与模式识别研究所, |
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| 基金项目： | 国家863高技术计划项目(863-306-ZD13-05-6) |
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| 摘 要： | 将互谱思想与高阶累积量方法相结合形成了多通道互高阶累积量方法，该方法用于谐波恢复，突破了高阶累积量方法对噪声的限制，降低了互谱方法对硬件隔离的要求，本文还采用了状态空间模型来描述时间序列，充分利用信号空间的结构特征，进而最终实现了在有色加性混合色噪声背景下较低信噪比的谐波恢复，仿真实验结果表明了该方法的有效性。
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| 关 键 词： | 信号处理 互高阶累积量 谐波恢复 混合色噪声 多通道 互谱思想 噪声抑制 |
| 文章编号： | 1006-2467(2001)09-1325-04 |
| 修稿时间： | 2000年9月13日 |
Method of Harmonic Retrieval Based on Cross-High-Order Cumulant and Structure Property of Signal Space |
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| YU Zhi qiang,YANG Jie,HU Ying.Method of Harmonic Retrieval Based on Cross-High-Order Cumulant and Structure Property of Signal Space[J].Journal of Shanghai Jiaotong University,2001,35(9):1325-1328. |
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| Authors: | YU Zhi qiang YANG Jie HU Ying |
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| Abstract: | A method of multi channel cross high order cumulant was proposed by combining the ideal of cross spectral with high order cumulant method. This method used in the harmonic retrieval outbreaks the noise constraints of high order cumulant and reduces the demand for hardware insulation of the cross spectral method. In addition, the state space model and the structure property of signal space were fully employed in this article, therefore the better performance of the harmonic retrieval was gained under the additive hybrid colored noise background as well as lower signal noise rate. The simulation experiment indicates the effectiveness of this method. |
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| Keywords: | signal proessing cross high order cumulant harmonic retrieval hybrid colored noise multi channel |
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