Modeling and simulation of infrared signature of remote aerial targets

A modeling and simulation method of infrared signature of remote aerial targets is presented in this paper. It takes a comprehensive consideration of the influence of shape, material, attitude, motion and surface temperature field of the target. Firstly, the geometric shape of targets are modeled. Then motion models are built to obtain the position and attitude of targets in real time. Next, we divide the target surface into hundreds of grids and calculate its temperature distribution by establishing a thermal equilibrium equation for each grid. Finally, the infrared radiation power received by the detector from the target can be achieved according to above analyses and the observation condition. Simulation results demonstrate that targets with different shape or different motion information have different infrared radiation characteristics, which provides a feasibility of using infrared signature for remote aerial targets recognition.