| 用多重自相关法检测微弱正弦信号 |
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| 引用本文： | 陈明奎,刘正平.用多重自相关法检测微弱正弦信号[J].噪声与振动控制,2006,26(5):28-30,61. |
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| 作者姓名： | 陈明奎 刘正平 |
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| 作者单位： | 华东交通大学,机电工程学院,南昌,330013 |
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| 摘 要： | 在LabVIEW平台的基础上，研究了利用多重自相关来检测微弱正弦信号的方法。此方法利用正弦函数的特性，通过多重自相关运算，再对信号进行频谱分析，就能准确检测出湮没于强大噪声的微弱正弦信号的频率信息和幅值信息。
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| 关 键 词： | 振动与波 弱信号检测 多重自相关 |
| 文章编号： | 1006-1355（2006）05-0028-03 |
| 收稿时间： | 2005-11-04 |
| 修稿时间： | 2005-11-04 |
The Detection of Weak Sinusoidal Signal by Multi-Layer Auto Correlation |
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| CHEN Ming-kui,LIU Zheng-ping.The Detection of Weak Sinusoidal Signal by Multi-Layer Auto Correlation[J].Noise and Vibration Control,2006,26(5):28-30,61. |
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| Authors: | CHEN Ming-kui LIU Zheng-ping |
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| Affiliation: | School of Mechanical Engineering,East China Jiaotong University, Nanchang 330013, China |
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| Abstract: | Based on the LabVIEW, a method is tection. The method is feasible to detect the weak introduced which can be applied in weak signal designal flooded in powerful noise because the sinusoidal signal has a specific trait of autocorrelation. The results of theory analysis and simulation show that this method can obtain exact frequency value and amplitude value. |
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| Keywords: | LabVIEW |
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