Fluxes scintillometer

Details Fluxes scintillometer Fluxes scintillometer

1990-07-30

1992-09-22

Rosenberger, Richard A.

Optics: measuring and testing

Refraction testing

73147, 7386106, G01N 2141, G01M 900

Patent

active

051501716

ABSTRACT:
A laser scintillometer measures the variance of the log intensity of diverged laser light received via a first path. A large aperture scintillometer measures the variance of the log intensity of light from an incoherently illuminated source received via a second path. The ratio of the two measured variances gives the inner scale of turbulence. The refractive-index structure parameter is derived from either measured variance and the inner scale. A processor then derives values of fluxes, such as heat flux and momentum flux, from the refractive-index structure parameter and the inner scale of turbulence using Monin-Obukhov similarity relationships.

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