Accession Number : ADA323991

Title :   Slant Path Extinction in a Stratified Atmosphere,

Corporate Author : NAVAL RESEARCH LAB MONTEREY CA

Personal Author(s) : Goroch, Andreas K.

PDF Url : ADA323991

Report Date : 1991

Pagination or Media Count : 5

Abstract : This report describes the detection of a destroyer target by a standard helicopter FLIR during operational exercises in the Arabian Gulf: The observations show the detection range to be dependent on approach altitude, first increasing, then decreasing as altitude increases. This results suggests that the tactical user may have an optimal altitude for maximum detection range during FLIR operations. The altitude is potentially dependent on the characteristics of the target, the sensor, and the intervening atmosphere. We have developed a closed form model of detection range in a stratified atmosphere. This model is used to describe the sensitivity of FLIR extinction to stratification and extinction characteristics of the atmosphere.

Descriptors :   *INFRARED DETECTION, *ATMOSPHERIC ATTENUATION, EXTINCTION, FORWARD LOOKING INFRARED SYSTEMS, SENSITIVITY, MARINE ATMOSPHERES, ALTITUDE, STRATIFICATION, SLANT RANGE, SEA TESTING.

Subject Categories : Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE