Spatial analysis of ground-based IR cloudy sky images

Shimshon N. Lashansky*, Nissim Ben-Yosef, Amotz Weitz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the development and analysis of sophisticated IR 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 IR cloudy sky images do not fit the analytical model of the Wiener Spectrum 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. A corrected model was developed that relates the spatial structure of cloudy sky images to the percentage cloud cover in the image.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages299-310
Number of pages12
ISBN (Print)0819408522, 9780819408525
DOIs
StatePublished - 1992
EventCharacterization, Propagation, and Simulation of Sources and Backgrounds II - Orlando, FL, USA
Duration: 20 Apr 199222 Apr 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1687
ISSN (Print)0277-786X

Conference

ConferenceCharacterization, Propagation, and Simulation of Sources and Backgrounds II
CityOrlando, FL, USA
Period20/04/9222/04/92

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