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Electro-optical propagation measurements during the MINOTAUROS experiment in the Cretan Sea

: Eisele, Christian; Sucher, Erik; Wendelstein, Norbert; Stein, Karin


Stein, Karin (Ed.) ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optics in Atmospheric Propagation and Adaptive Systems XX : 11-14 September 2017, Warsaw, Poland
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10425)
Paper 1042506, 17 pp.
Conference "Optics in Atmospheric Propagation and Adaptive Systems" <20, 2017, Warsaw>
Conference Paper
Fraunhofer IOSB ()
turbulence; refraction; dynamic signatures; transmission; tactical decision aid

We report on propagation measurements performed during the MINOTAUROS (Maritime INvestigations On Targets & Atmosphere Under Reduction of Optical Signatures) experiment on Crete, Greece, in late summer of 2016. The field trial has been organized by NATO STO Task Group SET-211 on Naval Platform Protection in the EO/IR Domain with strong support of the Hellenic Navy.
Besides meteorological measurements, the experiment included measurements of turbulence using a boundary layer scintillometer on a slant path (d = 8 km) across the entry of Souda Bay (Crete). These are compared to values obtained by a 3D sonic anemometer, which was deployed at one end of the propagation path. Refraction effects have been measured using a 17.5 km path from Drapanos to Gerani. Two meteorological buoys along the path were used to gather information about the atmospheric conditions. An overview and a first analysis of the results are presented. The refraction measurements are compared to simulations using MORTICIA (Model of Range and Transmission in Coastal and Inland Atmospheres), a new software tool currently under development in a collaboration of Fraunhofer IOSB and TNO.