Study and modeling of infrared polarization characteristics based on sea scene in long wave band
Received:January 07, 2018  Revised:April 21, 2018  download
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Author NameAffiliationE-mail
ZHANG Jing-Hua National University of Defense Technology 
ZHANG Yan National University of Defense Technology 
SHI Zhi-Guang National University of Defense Technology  
Abstract:According to the surface micro-element bidirectional reflectance distribution function (BRDF), the polarization effect of the object’s surface is analyzed. Based on infrared polarization characteristics in long wave band, a model combining the infrared reflected effect and emitted effect is developed to calculate the polarization degree. The simulation result of this model indicates that, the degree of polarization is determined by the value of the ratio of emitted radiation to reflected radiation. With the use of RadThermIR, the emitted radiation and reflected radiation of the sea surface and ship targets can be obtained. Based on radiation results and the proposed polarization calculation model, the polarization degree of the ship and sea water surface in different time and different detected angle is simulated. Experiments were conducted to measure the polarization degree in sea scenarios, and the results show that experimental data are consistent with simulated data, which validates the effectiveness of the proposed model.
keywords:infrared polarization  Stokes vector  polarization simulation  emitted radiation and reflected radiation  
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Copyright:《Journal of Infrared And Millimeter Waves》