| 互相关检测法在微弱信号检测中的应用 |
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| 引用本文： | 冯晨,秦工,詹昊思,蔡婷.互相关检测法在微弱信号检测中的应用[J].电子测试,2016(17):65-66. |
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| 作者姓名： | 冯晨 秦工 詹昊思 蔡婷 |
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| 作者单位： | 江汉大学物理与信息工程学院,湖北武汉,430056 |
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| 摘 要： | 本文详细分析了如何利用互相关检测法检测出微弱信号,设计了一个基于单片机的微弱信号检测装置.该装置能在噪声源均方根值为1V±0.1V(峰峰值近似为6.6V)的环境下,把峰峰值在200mV-2V范围,频率在500Hz-2000Hz范围内的微弱信号幅值检测出来,检测误差在5%以内.
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| 关 键 词： | 互相关检测法 微弱信号 检测装置 幅值 检测误差 |
Application of Cross-correlation Method in Weak Signal Detection |
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| Abstract: | This paper makes a close analysis about how to use the cross-correlation method to design a device based on single chip microcomputer.The device can detect the amplitude of the weak signal whose peak-peak value is in the range of 200 mv -2V and frequency is in the range of 500Hz – 2000Hz in the noise background where the root mean square value of noise source is 1V± 0.1V(Peak-peak value is approximately 6.6V). And the detection error is within 5%. |
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| Keywords: | cross-correlation method weak signal detection device amplitude detection error |
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