Approved for public release; distribution is unlimited / Measurements of sea surface radiance were made in the 2-5.6 and 8-14 um wavebands near the azimuth of the sun at low solar observation angles. From these measurement, an analysis of the statistical and physical nature of a sun glitter channel as presented to a low altitude observer (i.e. shipboard) was conducted. findings showed strong correlations between wind speed and corridor width, and between wind speed and strength of source radiance, dominated primarily by the direct solar reflected contribution to sea radiance. 8-14 um radiances showed far less susceptibility to the detrimental effects of sun glitter on IE sensing systems. All patterns were Gaussian in shape across the azimuthal extent of each glitter corridor. The magnitude of glinting radiances decreased with increasing depression angles, presenting an approximate half Gaussian radiance distribution in elevation. A method to convert apparent radiant (as received at the sensor) to equivalent zero-range blackbody source radiance was formulated but showed weaknesses in computing the path radiance of the atmosphere intervening between the sea and the AGA 780 sensor, and in accounting for the emissivity of the sea surface as it affected the self-emitted component of sea surface source radiance.
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/23616 |
| Date | 09 1900 |
| Creators | Moss, Eric Brian |
| Contributors | Cooper, Alfred W., Pieper, Ron J., Naval Postgraduate School (U.S.), Electronic Warfare Academic Group |
| Publisher | Monterey, California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
| Rights | This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted. |
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