Infrared image simulation of aircraft targets

In recent years, digital simulation has gained widespread application due to its ability to simulate target images in complex environments (interference) without expending significant human resources and financial investments. The simulation results can serve as the experimental foundation for algorithm design and system evaluation. Digital simulation of aircraft targets' infrared images involves the use of computer graphics and infrared radiation theory to visualize the physical infrared radiation. This paper presents a simulation methodology that, based on the creation of a typical aerospace background and an aircraft model, takes into consideration background radiation and atmospheric transmission during flight. This approach enables the generation of more realistic infrared scenes. It employs Fluent to solve the aircraft's temperature distribution, utilizes a program based on the Reverse Monte Carlo method to calculate the radiative intensity of aircraft surface elements, simulates the principles of an infrared detection system, and produces infrared images of the aircraft target from specific viewing angles.