Research And Implementation Of Aircraft Visual Simulation In Near Space

Because the near space aircraft flight is invisible,current researches about the flight visual simulation of the aircraft are very important.Visual simulation can provide intuitive and effective scenes for the aircraft flight simulation.During the flight of the near space aircraft,the visual simulation of the motion blurred images on the ground is always a difficult problem.According to researching present situation of near space visual simulation at home and abroad deeply,the thesis concentrated on blurry images,according to the principle of motion blur,using the relative motion and the imaging method to solve the problem that the maps become blurry when the aircraft changes its speed,height and angle,and built the near space flight scene,the space flight scene and the 3d roaming scene,realized the visual simulation of the aircraft.The main research contents and inno vation points of the paper are as follows:Researching on near space flight ground motion blur images.In view of the traditional principle of motion blurry image degradation is irreversible,this paper combined with the characteristics of near space flight,according to the principle of relative motion and the eye imaging principle,establishing a near space flight motion blur model,calculating all levels of maps ghosting lengthes while the aircraft fying in a linear motion or a variable attitudes motion,simulating and implementing.Modeling near space flight scenes.This paper,based on the actual flight process of HTV-2 aircraft and Open GL,designed different flight scenes: near space flight scene,space flight scene,3d roaming scene,and used the 3ds Max to make the aircraft model and the rocket launch model.In the near space flight scene,this paper mainly adopts the method of flat chain texture mapping and grid modeling to perform loading all levels of motion blurred image and implement the visual simulation;In space flight scene,making the three-dimensional earth modeling with Open GL,and the paper combined with atmospheric scattering effect drawing algorithm based on simplified atmospheric model,simulated and implemented the earth atmosphere,and designed the sky background;In 3d roaming scene,this paper applied 3ds Max to create HTV-2 3d model,and applied the Fume FX to make the rocket launch model,also made the aircraft roam in the sky box.Finally,the article researched and explained the key technologies of visual simulation in near space and the approaches of implementation in detail,mainly including texture mapping,TGA file loading,Billboard technology,and the importing of the 3ds model.