New method analyzing laser Doppler effect based on the conclusions of laser speckle technology

Xin Hong; Yuchi Lin; Meirong Zhao

doi:10.1117/12.402654

9 October 2000 New method analyzing laser Doppler effect based on the conclusions of laser speckle technology

Xin Hong, Yuchi Lin, Meirong Zhao

Proceedings Volume 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications; (2000) https://doi.org/10.1117/12.402654
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China

Abstract

For the first time, time varying speckle analysis is made in the differential structure and time-space correlated function has been deduced, in which the relationship between Doppler frequency shift and speckle time correlated function is got. The traditional method can obviously analyze the 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 surface structure. Superior to the traditional one, our analyzing method connects the Doppler frequency shift with the scattering field, which has the advantage for the analysis of the signal losing.

Citation Download Citation

Xin Hong, Yuchi Lin, and Meirong Zhao "New method analyzing laser Doppler effect based on the conclusions of laser speckle technology", Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); https://doi.org/10.1117/12.402654

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