Record Details

Study of sunshine, skyshine, and earthshine for aircraft infrared detection

DSpace at IIT Bombay

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Title Study of sunshine, skyshine, and earthshine for aircraft infrared detection
 
Creator MAHULIKAR, SP
POTNURU, SK
RAO, GA
 
Subject clear skies
rear fuselage
reflectance
radiation
radiance
surface
emissivities
signatures
model
earthshine
infrared imaging
infrared signature
low observables
skyshine
sunshine
 
Description Investigations are reported on infrared (IR) signature studies from internal sources of aircraft and helicopters, e. g. engine heated surfaces and exhaust plume. Due to the increasing sensitivities of IR sensors, irradiances from external sources are investigated here, namely sunshine, skyshine, and earthshine. Their role in determining the IR contrast in the 1.9-2.9, 3-5, and 8-12 mu m bands is studied. Estimation of earthshine is emphasized because of its tactical significance in low altitude missions and IR imaging studies. A comparison of IR radiance from aircraft's rear fuselage due to internal and external sources shows different roles in the 3-5 and 8-12 mu m bands. The important roles of earthshine and temperature-based radiance of aircraft surfaces are identified in the 8-12 mu m band.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-04T01:02:56Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2011-08-04T01:02:56Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2009
 
Type Article
 
Identifier JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 11(4), -
1464-4258
http://dx.doi.org/10.1088/1464-4258/11/4/045703
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9194
http://hdl.handle.net/10054/9194
 
Language en