| 基于非高斯AR模型微弱信号双谱分析 |
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| 引用本文： | 张宁,林春生.基于非高斯AR模型微弱信号双谱分析[J].武汉理工大学学报(交通科学与工程版),2008,32(1):126-129. |
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| 作者姓名： | 张宁 林春生 |
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| 作者单位： | 海军工程大学兵器工程系,武汉,430033 |
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| 基金项目： | 国防重点实验室基金项目资助(批准号:51444060101JB1108) |
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| 摘 要： | 采用高阶谱分析方法,基于非高斯AR参数模型对舰船微弱水声信号进行双谱分析.讨论了双谱和目标信号建模的相关概念;对实验数据进行高、低信噪比信号检测效果比较以及双谱与周期图功率谱的比较分析.分析结果表明,利用非高斯AR模型双谱技术分析水声微弱信号是一种新的有效方法,能够显著提高检测微弱信号的能力.
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| 关 键 词： | 微弱信号检测 双谱 非高斯AR模型 |
| 收稿时间： | 2007-10-18 |
| 修稿时间： | 2007年10月18 |
Bispectral Analysis of Weak Signal Detection Based on Non-Gaussian AR Model |
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| Zhang Ning,Lin Chunsheng.Bispectral Analysis of Weak Signal Detection Based on Non-Gaussian AR Model[J].journal of wuhan university of technology(transportation science&engineering),2008,32(1):126-129. |
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| Authors: | Zhang Ning Lin Chunsheng |
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| Abstract: | The weak signals of ship are analyzed by means of higher order spectral technique based on Non Gaussian AR model.The concepts of bispectrum and AR model are discussed.The effects of bispectral analysis for high SNR signal and low SNR signal are compared.The analysis results show that the bispectral analysis technique based on Non-Gaussian model is an effective method to detect the weak signal. |
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| Keywords: | weak signal detect bispectral analysis non-gaussian AR model |
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