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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 19 — Jul. 1, 2010
  • pp: E31–E37

Comparison of diurnal contrast changes for millimeter-wave and infrared imagery

John P. Wilson, Daniel G. Mackrides, Jesse P. Samluk, and Dennis W. Prather  »View Author Affiliations


Applied Optics, Vol. 49, Issue 19, pp. E31-E37 (2010)
http://dx.doi.org/10.1364/AO.49.000E31


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Abstract

Far-infrared outdoor imagery has a lower contrast in the morning/afternoon relative to the highest contrast, which is observed at 14:00. Millimeter-wave (mmW) imagery can also follow this pattern. However, in this paper, we show that the opposite can occur for mmW imagery, wherein a higher contrast can occur in the morning/afternoon and lower contrast at 14:00. To this end, we show that a wood and rubber sample are observed to have a difference in mmW radiometric temperature of 17 ° C at 9:00 and a difference of only 7 ° C at 14:00. Details of our observations are presented.

© 2010 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(110.6820) Imaging systems : Thermal imaging
(040.2235) Detectors : Far infrared or terahertz
(280.4991) Remote sensing and sensors : Passive remote sensing
(010.7295) Atmospheric and oceanic optics : Visibility and imaging

History
Original Manuscript: December 22, 2009
Revised Manuscript: March 15, 2010
Manuscript Accepted: April 8, 2010
Published: April 23, 2010

Citation
John P. Wilson, Daniel G. Mackrides, Jesse P. Samluk, and Dennis W. Prather, "Comparison of diurnal contrast changes for millimeter-wave and infrared imagery," Appl. Opt. 49, E31-E37 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-19-E31

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