A time domain correction method for Doppler-distortion signal from acoustic moving source

Doppler effect widely exists in the signal from the moving acoustic source, in order to solve such problems as frequency shift and frequency band expansion, a time domain correction method is presented in this paper. First, the discrete time series for interpolation and the amplitude restoration formula are obtained based on the moving relationship and the Morse acoustics theory, then the amplitude weights are corrected and the distortion signal is interpolated. Every single point of the discrete signal is operated separately in time domain, compared with the existed frequency domain methods, this method does not need to know the characteristic frequency beforehand and would not be influenced by the blending of the frequency band. This method can be used to correct multiple frequency signals and it is also a simple and effective Doppler-effect reduction method.