Issue 1, December 2009

Optical Diagnostics of Flows

Airflow characterization by Rayleigh-Mie lidars

Auteurs: 

N. Cézard, C. Besson, A. Dolfi-Bouteyre, L. Lombard

This paper deals with lidar systems applied to airflow measurements. The properties of the two main light scattering processes, Rayleigh and Mie scattering, are presented and correlated to general but important rules for lidar design. The Rayleigh lidar developed at Onera for short-range wind speed measurements is also presented, and the Doppler analysis technique using Michelson fringe imagery is briefly discussed.

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