Studying the Effect of Seasonal Changes on the Infrared Radiation Properties of the Ground Target Using Multi-Physics Simulation

The infrared radiation properties of ground targets are influenced by the surrounding environment, solar radiation and climate. Typically, the target and its environment exhibit different temperature distributions due to different thermodynamic characteristics. Coupled multi-physics field simulation methodare is used, and the infrared radiation characteristics of ground target is investigated under different seasons based on thermodynamics and computational fluid dynamics. The temperature contour plots are observed to find that the temperature distributions of the ground target and its background are closely related to the seasons. The temperature variation curves of different monitoring points are compared to obtain the temperature of the ground target with respect to ambient temperature, structures, materials and solar altitude angle.