Thermal interactions and infrared simulation of armored vehicles and ground background

In order to fully reveal the influence of thermal interactions between the armored vehicles and ground background on ground background temperature and infrared radiation characteristics, the temperature and infrared signature model of armored vehicles and ground background were established, with focus on heat transfer between armored vehicles and ground. By introducing mechanical relationship between the road and the track, thermal and mechanical models between the moving vehicle and the road were established. Using method of the moving mesh, the subsidence phenomenon and thermal trace on the road after target vehicle moving were simulated. Based on the infrared radiation theory, considering the radiation, reflective radiation and atmospheric transmission characteristic, the thermal interactions and infrared radiation characteristics distribution of armored vehicles and terrain background under three different conditions were calculated. The simulated temperature and measured temperature in the experiment were compared. The model's precision was validated. The simulation results show that this method is crucial to the stealth design and stealth technology assessment of ground target.