Accession Number : ADA293464

Title :   Physics-Based Infrared Terrain Radiance Texture Model.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Weiss, Richard A. ; Sabol, Bruce M. ; Smith, James A. ; Bales, John W.

PDF Url : ADA293464

Report Date : FEB 1995

Pagination or Media Count : 123

Abstract : This report develops a physics-based semiempirical model for predicting the texture of an infrared (IR) image of terrain areas including soil, grass, and forest canopies. The model is based on an empirical determination of the relationship between the standard deviation and correlation length of the terrain radiance variations in an IR image and the average value of the radiance in the image. The average value of the terrain radiance is then theoretically predicted by the WESTHERM terrain radiance prediction model in terms of local terrain and weather conditions and in terms of the time of day. In this way, the diurnal variation of the standard deviation and correlation length of the radiance or brightness temperature can be predicted for specified terrain and weather conditions.

Descriptors :   *INFRARED IMAGES, *TERRAIN INTELLIGENCE, THERMAL PROPERTIES, WEATHER, PREDICTIONS, BRIGHTNESS, CORRELATION, RADIANCE, LENGTH, STANDARD DEVIATION, DIURNAL VARIATIONS, TREE CANOPY, GRASSES, TERRAIN MODELS.

Subject Categories : Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE