Marine-Modified LOWTRAN: The Contribution of Sun Glint
Abstract
Personnel added sun glint to the Atmospheric Transmittance/Radiance Computer Code LOWTRAN 6 in order to provide a more realistic representation of the infrared marine environment. Personnel compared the modified model's results with infrared data that were taken at 3 - 5 microns over the open ocean during different solar elevations and wind speed conditions. A significant glint contribution was obtained at 1450 PDT on 10 October 1991. At this time, personnel noted a close match between the shape of the predicted and observed radiance values in the sky and sea. The absolute value of the predicted and observed radiances differed, however, by a large constant with an equivalent blackbody temperature of approximately 5 deg C. Personnel speculated that the origin of this additional radiance may be multiple scattering of solar radiation. Sun glint, Infrared vision, Spectral radiance, Thermal imaging system, LOWTRAN 6.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1993
- Accession Number
- ADA269547
Entities
People
- C. R. Zeisse
Organizations
- Naval Command, Control and Ocean Surveillance Center