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Proceedings Paper

Modeling and analysis for infrared clutter radiance of atmospheric absorption band sensor
Author(s): Yiming Cao; Wei Zhang; Mingyu Cong; Wenzhuo Bao; Xianglong Meng; Jun Cheng
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Paper Abstract

An extended analytic model for atmospheric clutter radiance in absorption bands is developed. In this model, clutter radiance is mainly due to temperature and reflectance fluctuations of atmospheric, cloud and earth. A simplified line-of-sight (LOS) radiance model for short-wave infrared (SWIR) and mid-wave infrared (MWIR) absorption bands is introduced, based on the one-dimensional radiation transfer equation (RTE) and Young's semi-empirical model for diffuse reflectance of clouds. Under the assumption that atmospheric temperature fluctuations are isotropic horizontally, the relations between clutter radiance and temperature fluctuations as well as other factors are obtained. The clutter radiance characteristics are analyzed in 2.7μm and 4.3μm absorption bands, the long wavelength wing of 2.85μm and 4.35μm shows a much larger clutter contribution from earth and cloud. The models present here are efficient and reasonable by comparing the results of MODTRAN and data from SPIRIT-III radiometer.

Paper Details

Date Published: 5 August 2009
PDF: 6 pages
Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 73832K (5 August 2009); doi: 10.1117/12.835984
Show Author Affiliations
Yiming Cao, Harbin Institute of Technology (China)
Wei Zhang, Harbin Institute of Technology (China)
Mingyu Cong, Harbin Institute of Technology (China)
Wenzhuo Bao, Harbin Institute of Technology (China)
Xianglong Meng, Harbin Institute of Technology (China)
Jun Cheng, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 7383:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications
Jeffery Puschell; Hai-mei Gong; Yi Cai; Jin Lu; Jin-dong Fei, Editor(s)

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