| 基于双谱的噪声信号检测 |
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| 引用本文： | 周伟奇,王益艳,伍世云. 基于双谱的噪声信号检测[J]. 达县师范高等专科学校学报, 2011, 21(2): 37-41 |
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| 作者姓名： | 周伟奇 王益艳 伍世云 |
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| 作者单位： | 周伟奇,ZHOU Wei-qi(中国神华煤制油化工有限公司北京分公司,北京,100011);王益艳,伍世云,WANG Yi-yan,WU Shi-yun(四川文理学院物理与工程技术系,四川达州,635000) |
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| 基金项目： | 四川文理学院教改立项课题 |
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| 摘 要： | 传统的功率谱分析方法不能提供信号的高阶统计信息，在信号检测中无法有效地抑制噪声．本文根据高阶谱对高斯噪声是零响应的这一特性，提出了一种基于双谱的信号检测方法．通过实验仿真，结果表明：无论是对混有随机噪声还是高斯噪声的信号，在低信噪比的情况下，该方法均可获得比传统FFT方法更好的检测效果．
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| 关 键 词： | 信号检测 矩 累积量 双谱 噪声信号 |
Noise Signal Detection Based on Bi-spectrum |
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| ZHOU Wei-qi,WANG Yi-yan,WU Shi-yun. Noise Signal Detection Based on Bi-spectrum[J]. Journal of Daxian Teachers College, 2011, 21(2): 37-41 |
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| Authors: | ZHOU Wei-qi WANG Yi-yan WU Shi-yun |
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| Affiliation: | ZHOU Wei-qi1,WANG Yi-yan2,WU Shi-yun2(1.Beijing Branch of China Shenhua Coal to Liquid and Chemical Co.ltd,Beijing 100011,China,2.Physics and Engineering Technology Department of Sichuan University of Arts and Science,Dazhou Sichuan 635000,China) |
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| Abstract: | The traditional power spectrum analysis can neither provide higher order statistics of signal,nor can it detect useful signal with noise suppression.This paper presents a signal detection method based on bi-spectrum,which is according to the feature that higher order spectra of the Gaussian noise is zero response.Simulation results show that the proposed method can obtain better detection results than the traditional FFT method in the case of low SNR,whether the original signal is mixed with random noise or... |
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| Keywords: | Signal detection moment accumulation bi-spectrum noise signal |
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