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Proceedings Paper

Spatial analysis of ground-based IR cloudy sky images
Author(s): Shimshon N. Lashansky; Nissim Ben-Yosef; Amotz Weitz
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Paper Abstract

In the development and analysis of sophisticated JR detection and recognition systems it is necessary to have a priori knowledge of the background clutter . In this paper, the spatial structure of ground-based infrared cloudy sky images is analyzed in terms of the spatial power spectrum and the spatial autocorrelation function . The experimental results we obtained for ground-based JR cloudy sky images do not fit the analytical model of the Wiener Spectrum 1,2 that is frequently used to describe natural clutter sources in the infrared .The spatial structure of ground-based cloudy sky IR images was found to be dependent on the percentage cloud cover in the image . Acorrected model was developed that relates the spatial structure of cloudy sky images to the percentage cloud cover in the image.

Paper Details

Date Published: 21 September 1992
PDF: 12 pages
Proc. SPIE 1687, Characterization, Propagation, and Simulation of Sources and Backgrounds II, (21 September 1992); doi: 10.1117/12.137857
Show Author Affiliations
Shimshon N. Lashansky, Hebrew Univ. of Jerusalem (Israel)
Nissim Ben-Yosef, Hebrew Univ. of Jerusalem (Israel)
Amotz Weitz, Hebrew Univ. of Jerusalem (Israel)

Published in SPIE Proceedings Vol. 1687:
Characterization, Propagation, and Simulation of Sources and Backgrounds II
Dieter Clement; Wendell R. Watkins, Editor(s)

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