Thermal scene analysis via finite element model and finite difference time domain numerical solution of the electromagnetic wave propagation in the short wave and long wave infrared bandarch

Alessandro Albertoni

doi:10.1117/12.830407

23 September 2009 Thermal scene analysis via finite element model and finite difference time domain numerical solution of the electromagnetic wave propagation in the short wave and long wave infrared bandarch

Alessandro Albertoni

Author Affiliations +

Proceedings Volume 7481, Electro-Optical and Infrared Systems: Technology and Applications VI; 748106 (2009) https://doi.org/10.1117/12.830407
Event: SPIE Security + Defence, 2009, Berlin, Germany

Abstract

We utilize the Finite Element Model (FEM) and Finite Difference Time Domain (FDTD) numerical solution of the Electromagnetic wave propagation in the Short Wave Infrared (SWIR) and Long Wave Infrared (LWIR) bands in order to calculate the target radiance propagation and environment attenuation due to transmission, absorption and reflections in atmosphere and obstacles. We leave to traditional minimum resolvable temperature (MRTD) the model of the camera radiance collection (actual thermal sensitivity of the camera). The main advantage of the numerical propagation is that there is the possibility to model exactly the specific target shape and the specific environment (depending of the computational power) and calculate the residual temperature.

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Alessandro Albertoni "Thermal scene analysis via finite element model and finite difference time domain numerical solution of the electromagnetic wave propagation in the short wave and long wave infrared bandarch", Proc. SPIE 7481, Electro-Optical and Infrared Systems: Technology and Applications VI, 748106 (23 September 2009); https://doi.org/10.1117/12.830407

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