Research On Real-time Infrared Radiation Transmission And Imaging Simulation

In recent few years,infrared technology plays an important part in nation defense,economy,scientific research and so on which is attached importance to countries all over the world.Not only infrared early warning but also infrared remote sensing and so on,depend on infrared imaging which has a long operating distance and has strong abilities in anti-interference performance,penetrability and sustainability,having a high status in the field of the infrared technology.Nowadays,because of the importance of infrared imaging technology,the heat of the study on infrared imaging technology is increasing.However,in the related work of infrared imaging,we need lots of infrared images in different conditions as the objects of study or testing,but there aren't more ways to get infrared images in some specific conditions directly,which is difficult and costs a lot,than on the spot,which is reliable and credible.However,this way might cost lots of materials,even in some occasions,we're forbidden to get infrared images directly.Besides,we can only get the infrared images in the occasion when we do collecting on the spot instead of the infrared images in other occasion which can't cover all occasions we need.Basing on the background above,this paper introduces the infrared simulation technology.This paper has simulated images which generate in 4 IR-bands'(SW,MW,MW-LW,LW)infrared camera lens by computer mathematic simulation,providing an easy,simple,feasible,convenient,economical and fast way for us to solve these problems.Finally,this paper has achieved the real-time calculation of radiation transfer and imaging simulation in the infrared camera lens which have great value on practicality and application.This paper has mainly studied on the targets and backgrounds for the purpose of IR surveillance and IR early warning where the targets here are usually aircrafts like planes,fighters or missiles and the backgrounds are always the earth like lands,oceans,lawns and forests.The target and backgrounds are different in the ways of radition transfer and imaging simulation,thus,we take the target and backgrounds apart in one image,where we take the target as a “point” and the backgrounds as “surface elements” which is the emphasis.This paper has figured out the whole process of the infrared imaging from surface features to the infrared camera lens,and mainly studies on the radiant reflection of surface features.In fact that the most popular strategy now is using the simple radiant reflection model for the process of reflection,which the consequences of are unsatisfied,this paper chose the Local Illumination Model which used parameterized BRDF model for indexing reflection data to model the process of radiant reflection.Finally,this paper has built the radiation transfer link model of background imaging combining the radiation from surface features and the radiation from the reflection.This paper has focused on the current related study which is unsatisfied in instantaneity and came up with the instantaneity request and tried to figure it out.What this paper mainly did was,with the premise of deep study on the theory and process of infrared simulation,we used parallel mode by CUDA in GPU,and powerful functions of graphics processing by OpenGL to achieve the calculation of radiation transfer and imaging simulation in IR camera lens.This paper has come up with the specific realization of the imaging simulation by CUDA and Open GL,as is a software of infrared imaging simulation.Finally,this paper has verified the quality of the final images and the performance of instantaneity.The simulation images which this paper got,are authentic and real-time,providing the foundation and conditions for the follow-up deep research in the field of infrared simulation.