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200m V-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。
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 500 Hz – 2000 Hz 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%.
出处
《电子测试》
2016年第9期65-66,共2页
Electronic Test
关键词
互相关检测法
微弱信号
检测装置
幅值
检测误差
cross-correlation method
weak signal
detection device
amplitude
detection error
