带通采样在数据采集中的应用研究

Investigation on the Application of Bandpass Sampling in Data Acquisition

摘要:

在数据采集中采用带通采样，可大大降低采样率，但系统中的抗混叠滤波器会造成相位的非线性。采用对滤波后的信号进行带通采样，然后再用FRR滤波器校正相位的非线性，从而不失真地还原原信号，最后在Matlab中进行仿真，验证了该方法的有效性。

Abstract:

The application of bandpass sampling in data acquisition can reduce the sampling frequency greatly.But the anti-aliasing filter in the system would bring the phase nonlinearity.So a new method is introduced in this article.In the method,sample the signal