The Study on Infrared Characteristic of Ground Targets Designated by Artificial Infrared Illuminator

As for detection and identification of target,simulation for infrared characteristic and research on infrared stealth technology,theoretical model of infrared illuminator designating ground targets under natural conditions was built.Through building heat conduction differential equations and boundary condition,the method of calculating surface temperature of targets through artificially infrared illuminator was obtained.Taking the building's surface for example,surface temperature with different designating duration,different power,and different distance were calculated and discussed;On the basis of temperature calculation,the infrared designation through artificially infrared illuminator was calculated and analyzed.The result shows that in short time designation,the degree of variety is determined by targets' reflective-radiation from the infrared illuminator;in long time radiation,the degree of variety is determined by targets' radiation and reflective-radiation.