【摘要】 本研究将用于滤除工频干扰的自适应相干模板法进行了推广 ,使其可以用于抑制准周期干扰。这种方法利用干扰信号的准周期性 ,从原始输入信号中得到干扰信号模板 ,进而从原始输入信号中减去干扰信号的模板 ,从而达到滤除信号中准周期干扰的目的。自适应相干模板法不需要附加的参考通道 ,方法简单 ,计算量小 ,无需专用硬件即可实现。更多还原

【Abstract】 An adaptive coherent model algorithm was extended for removal of quasi-periodic interference. The primary idea presented in this paper was, to establish an adaptive interference model using original signal itself based on signal quasi-periodic quality; then to subtract the interference model from the original signal so as to eliminate quasi-periodic interference. This adaptive coherent model method has been proven with experiments, and had satisfactory effect for removal of quasi-periodic interference in physiological signal measurement. The algorithm is simple, saves time, and can be used in a microprocessor-based instrument.更多还原