Research On The Simulation Of Ballistic Missile’s Infrared Imaging On The Middle Course Of The Flight

In recent years, the research of the visual simulation of missile flight is increasingly flourishing, and the research threshold is becoming more and more low. Especially, with the remarkable improvement of computer graphic technology and virtual simulation technology, the sense of realism of the visual scene is also more and more strong. Nowadays, multi physical field has become one of the most important direction of the visualization simulation field. Based on this background, this paper is mainly devoted to study the infrared radiation characteristics of ballistic missile’ surface, and to construct the visual simulation system of the infrared radiation of missile, which is on the middle course of flight. In order to achieve this objective, the paper mainly completes the following work:Firstly, the heat environment and the radiation environment of missile in midcourse were analyzed in detail, and the basic calculation method of temperature field and radiation field were introduced respectively; And based on the reasonable simplified model of missile geometry, the numerical calculation model of the surface temperature distribution of missile were established, and so was its radiation force distribution model, which mainly include the heat transfer equations and the heat transfer boundary conditions; In addition, the calculation result of temperature field and radiation field were quantified and displayed by using the OpenGL API functions.Secondly, focusing on the time-consuming problem of temperature field calculation, this paper also studied a fast computation method of temperature field based on the architecture of CUDA. According to the characteristics of CUDA framework, the calculation task was assigned into two parts: the serial part and the parallel part, which were executed on C PU and GPU respectively. Besides, the computer hardware and software platform were constructed for the task, and the programming was compiled to realize the acceleration of temperature field’ calculation, and the parallel efficiency was analyzed.Finally, based on t he traditional visual simulation system framework of missile flight, the temperature field and radiation field simulation nodes of missile flight were integrated with it, and finally realizing the infrared radiation visualization simulation system of missile flight based on HLA.