A new method analyzing laser doppler effect based on the concusions of laser speckle technology

摘要

For the first time varying spackle analysis is made in the differential structure and time-space corcorrelated function has been deduced, in which the relationship between Doppler frequency shift and speckle time c9orrelated function is got. The traditional method can obviously analyze u0014he Doppler frequency shift of the single particle tested, which is suitable for the condition of fluid measurement, while the signal is DOppler burst. Different from it, for the solid scattering surfaces, signal is similar to the continuous one and signal losing happens randomly due to the DOppler frequency shift with the scattering field, which has the advantage for the analysis of signal losing.