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Estimation of turbulence strength, anisotropy, outer scale and spectral slope from an LED array

: Gladysz, Szymon; Segel, Max; Eisele, Christian; Barros, Rui; Sucher, Erik


Eijk, A.M.J. van ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Laser communication and propagation through the atmosphere and oceans IV : 10 - 12 August 2015, San Diego, California, United States
Bellingham, WA: SPIE, 2015 (Proceedings of SPIE 9614)
ISBN: 978-1-62841-780-7
Paper 961402, 7 pp.
Conference "Laser Communication and Propagation through the Atmosphere and Oceans" <4, 2015, San Diego/Calif.>
Conference Paper
Fraunhofer IOSB ()
turbulence; outer scale; tilt anisoplanatism; non-Kolmogorov turbulence

A simple grid of 10×10 white-light LEDs allows for simultaneous measurement of several characteristics of atmospheric turbulence. With this device, an imaging sensor and the model of tilt anisoplanatism one can determine turbulence strength, anisotropy, outer scale and spectral slope of turbulence. We describe the theory and present preliminary results obtained over a 270-m path.