Measurements of the atmospheric turbulence spectrum and intermittency using laser scintillation

Rod G. Frehlich

doi:10.1117/12.46545

1 July 1991 Measurements of the atmospheric turbulence spectrum and intermittency using laser scintillation

Rod G. Frehlich

Proceedings Volume 1487, Propagation Engineering: Fourth in a Series; (1991) https://doi.org/10.1117/12.46545
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

Simultaneous measurements of the spatial intensity covariance of laser scintillation and the variance of integrated intensity collected by multiple circular apertures provide sufficient information to determine the form of the atmospheric turbulence spectrum over short spatial and temporal scales. This ensures local stationary of the turbulence. The estimated parameters of the turbulence spectrum (level of turbulence C2n and inner scale) over these stationary events provide accurate estimates of the intermittency of atmospheric turbulence. The advantages of laser scintillation measurements include spatial averaging that improves statistical accuracy, true measurements of spatial statistics without the need to convert temporal statistics to spatial using Taylor's hypothesis, remote sensing of atmospheric turbulence which reduces contamination by support structures, and rugged instrumentation for reliable measurements. New uses of laser scintillation measurements will be discussed.

Citation Download Citation

Rod G. Frehlich "Measurements of the atmospheric turbulence spectrum and intermittency using laser scintillation", Proc. SPIE 1487, Propagation Engineering: Fourth in a Series, (1 July 1991); https://doi.org/10.1117/12.46545

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