Physics – Optics
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3219...52s&link_type=abstract
Proc. SPIE Vol. 3219, p. 52-64, Optics in Atmospheric Propagation and Adaptive Systems II, Anton Kohnle; Adam D. Devir; Eds.
Physics
Optics
Scientific paper
In July 1996 FGAN-FfO participated in the LAPTEX (low altitude point target experiment) trial in Crete. Aim of this experiment was to improve the knowledge of environmental factors that impact EO system performance in the marine boundary layer. The atmospheric conditions were subtropic with absolute humidities higher than 15 g/m(superscript 3). FGAN-FfO used two IR-cameras working in different bands for tracking an IR point source mounted on a ship sailing away from the observation site to the horizon. This paper deals with the analysis of the signal decrease with range under different atmospheric conditions. The measurements are compared with LOWTRAN 7 model predictions. Moreover, we studied the detection range performance under certain refraction conditions and the signal increase due to atmospheric focusing effects near the sea surface.
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