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Proceedings Paper

Use of the 4.5- to 5-micron atmospheric window for background temperature evaluation
Author(s): Eli T. Talmor; Leslie Salem Balfour; Avshalom Pasternak; Baruch Ben-Dor
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Paper Abstract

Spectral radiance of various background elements (e.g., vegetation, rocks, snow and concrete) were measured in the 4.5 - 5 micrometers atmospheric window, both during the day and night. Effective temperatures of these surfaces were calculated and an attempt was made to evaluate true temperatures as well. The results are quite satisfactory, probably due to the following reasons: (1) The emissivity of most natural surfaces in this spectral region is high. Therefore the non-thermal (reflected solar component of the radiance) is small. (2) The spectral variation of the emissivity of most natural surfaces in this spectral region is very small, thus facilitating the evaluation of contact surface temperature. The results suggest the feasibility of using the 4.5 - 5 micrometers atmospheric window for background temperature evaluation.

Paper Details

Date Published: 13 August 1993
PDF: 9 pages
Proc. SPIE 1971, 8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing, (13 August 1993); doi: 10.1117/12.150988
Show Author Affiliations
Eli T. Talmor, Technion--Israel Institute of Technology (Israel)
Leslie Salem Balfour, Technion--Israel Institute of Technology (Israel)
Avshalom Pasternak, Technion--Israel Institute of Technology (Israel)
Baruch Ben-Dor, Technion--Israel Institute of Technology (Israel)


Published in SPIE Proceedings Vol. 1971:
8th Meeting on Optical Engineering in Israel: Optical Engineering and Remote Sensing

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