Variation in MidIR and LWIR polarimetric imagery due to diurnal and meteorological impacts

Kristan P. Gurton; Melvin Felton

doi:10.1117/12.782503

31 March 2008 Variation in MidIR and LWIR polarimetric imagery due to diurnal and meteorological impacts

Kristan P. Gurton, Melvin Felton

Proceedings Volume 6972, Polarization: Measurement, Analysis, and Remote Sensing VIII; 69720W (2008) https://doi.org/10.1117/12.782503
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

We present radiometric and polarimetric calibrated imagery recorded in both the mid-wave IR (MidIR) and long wave IR (LWIR) as a function diurnal variation over several multiday periods. We compare differences in polarimetric and conventional thermal imagry for both IR atmospheric transmission windows, i.e., 3-5μm and 8-12 μm 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 S0 (conventional thermal) and degree-of-linear polarization (DOLP) imagery are presented and compared.

Citation Download Citation

Kristan P. Gurton and Melvin Felton "Variation in MidIR and LWIR polarimetric imagery due to diurnal and meteorological impacts", Proc. SPIE 6972, Polarization: Measurement, Analysis, and Remote Sensing VIII, 69720W (31 March 2008); https://doi.org/10.1117/12.782503

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KEYWORDS

Long wavelength infrared

Polarimetry

Polarization

Thermography

Calibration

Sensors

Cameras

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