Accession Number : ADA486684
Title : Calibrated Mid-wave Infrared (IR) (MidIR) and Long-wave IR (LWIR) Stokes and Degree-of-Liner Polarization (DOLP)
Descriptive Note : Final rept.
Corporate Author : ARMY RESEARCH LAB ADELPHI MD COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE
Personal Author(s) : Gurton, Kristan P ; Felton, Melvin
Report Date : Sep 2008
Pagination or Media Count : 30
Abstract : We present radiometric and polarimetric calibrated imagery recorded in both the mid-wave infrared (IR) (MidIR) and long-wave IR (LWIR) as a function of diurnal variation over several multiday periods. We compare differences in polarimetric and conventional thermal imagery for both IR atmospheric transmission windows, i.e., the 3-5 mu and 8-12 mu regions. Meteorological parameters measured during the study include temperature, relative humidity, wind speed/direction, precipitation, and ambient atmospheric IR loading. The two camera systems used in the study differed significantly in design. The LWIR polarimetric sensor utilizes a spinning achromatic retarder and is best suited for static scenes, while the MidIR system is based on a division-of-aperture design and is capable of recording polarimetric imagery of targets that are rapidly moving. Examples of both So (conventional thermal) and degree-of-linear polarization (DOLP) imagery are presented and compared.
Descriptors : *INFRARED IMAGES , *POLARIMETRY , *INFRARED DETECTORS , WIND VELOCITY , RECORDING SYSTEMS , CALIBRATION , METEOROLOGICAL PHENOMENA , LONG WAVELENGTHS , RADIOMETRY , HUMIDITY , DIURNAL VARIATIONS , WIND DIRECTION , CAMERAS , ATMOSPHERIC PHYSICS , PRECIPITATION
Subject Categories : Infrared Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE