Geometrical dart infrared polarization signatures

Gareth D. Lewis; David L. Jordan

doi:10.1117/12.243008

17 June 1996 Geometrical dart infrared polarization signatures

Gareth D. Lewis, David L. Jordan

Proceedings Volume 2742, Targets and Backgrounds: Characterization and Representation II; (1996) https://doi.org/10.1117/12.243008
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The 8 - 12 micrometer polarization signatures of diffuse and specular aluminum geometrical darts were analyzed outdoors using a polarization sensitive thermal imager. Results of the degree and plane of polarization are presented for different thermal imager gain bands and weather conditions during a two week period. The 0 degree, 45 degree, 90 degree and 135 degree polarizer orientations were thermally calibrated and the S1 and S2 Stokes parameters shown as radiometric temperature differences. The effect on the polarization signatures of range is considered for these targets at 100 m and 370 m. A comparison of the degree of polarization to changes in the emission/reflection balance and to variations in the dart's complex refractive index is made.

Citation Download Citation

Gareth D. Lewis and David L. Jordan "Geometrical dart infrared polarization signatures", Proc. SPIE 2742, Targets and Backgrounds: Characterization and Representation II, (17 June 1996); https://doi.org/10.1117/12.243008

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