Turbulence characterization and investigation of correlations to meteorological parameters: results from NATO SET-304 field trial in Le Fauga-Mauzac, France

Jens Grundmark; Markus Henriksson

doi:10.1117/12.2679406

19 October 2023 Turbulence characterization and investigation of correlations to meteorological parameters: results from NATO SET-304 field trial in Le Fauga-Mauzac, France

Jens Grundmark, Markus Henriksson

Author Affiliations +

Proceedings Volume 12731, Environmental Effects on Light Propagation and Adaptive Systems VI; 1273108 (2023) https://doi.org/10.1117/12.2679406
Event: SPIE Remote Sensing, 2023, Amsterdam, Netherlands

Abstract

The research task group NATO SET-304 Modelling, measuring and mitigating optical turbulence (M3T) conducted a field trial at the ONERA Le Fauga-Mauzac center near Toulouse, France, from October 10th to 15th, 2022. Turbulence characterization experiments were performed by imaging an array of light-emitting diodes (LEDs) at a distance of 0.2 km. The refractive index structure parameter 𝐶_𝑛² was calculated from differential angle-of-arrival fluctuations (DAoA) for pairs of LEDs. A large area scintillometer was also used, with good correspondence between the two sensors. The use of multiple pairs of LEDs in the DAoA-method provides error measures for the 𝐶_𝑛²-measurements and allow for the study of spatial variability. Fluctuations of 𝐶_𝑛² occurring on timescales of the order of seconds have been investigated. As the temporal variation was consistent over independently analyzed rows of the LED array, it can be concluded that they exist for the local path. Statistics of the measured parameter and correlations to other parameters, such as atmospheric refraction effects, solar insolation, and temperature variations with height above ground, are reported.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jens Grundmark and Markus Henriksson "Turbulence characterization and investigation of correlations to meteorological parameters: results from NATO SET-304 field trial in Le Fauga-Mauzac, France", Proc. SPIE 12731, Environmental Effects on Light Propagation and Adaptive Systems VI, 1273108 (19 October 2023); https://doi.org/10.1117/12.2679406

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