Research on Measure Method of Doppler Shift

Doppler shift is an important parameter for characterizing the time-varying multipath fading channel.In this paper,a measuring method of Doppler shift based on the measurement of received signal level is introduced according to the Fourier transform relationship between Doppler spectrum and the correlation function of the difference in channel time.A corresponding software of data processing is developed,and measured data can be shown in visual graphics.The Doppler shifts of several field lines are measured using this method,and the results are quite accurate,which provides an important reference for the design of an optimum communication system with multipath fading channel.