A novel filtering approach for dynamic pulse signal based on parameters self-adjusting integer-coefficients filter

Abstract

The signal to noise ratio (SNR) of dynamic pulse signal is time-varying, which influence the results of common used filtering methods. On the basis of integer-coefficients digital filter, in this study, we proposed a new approach can adjust the parameters of filter by the smooth degree of pulse signal. Moreover, the proposed method and three common used filtering methods: integer-coefficients digital filter, empirical mode decomposition) (EMD) filter and morphological filter are employed to suppress the noise and interference in the simulated and measured pulse signals. The results show that the proposed method can suppress the noise and interference of pulse signal effectively and can be used in dynamic pulse signal filtering.