Research And Design Of Visual Simulation For Target In Avion Battlefield

Avion visual simulation system is paramount to flight train simulator. The system can be used in the routine train subjects and confronting train in complex scenes, and the kind of train is not dangerous to persons and not damaging to equipments. The related research of avion simulation involves the technology of collision detection among objects, the technology how to produce and how to display the visualization.In the paper some key technologies about visualization display are studied based-on three dimensions visualization scheme of multicenter rare projection. Some algorithms about collision detection are put forward, and some are improved. Below are main contents and innovations of the paper:1. The methods of modeling and producing of visualization are studied. According to the principles of three dimension imaging, the strongpoints and shortcomings of the methods usually used are analyzed. A scheme about three dimensions imaging based-on multicenter rare projection is presented, which architecture of software and hardware are designed, then the feasibility in the realtime, synchronization and requirement to resource is demonstrated.2. Some algorithms about collision detection are investigated. The projection on the axils algorithms of speed bounding box is presented which aim at the simulation to complex environment including a great deal of simulated objects at high speed. The simulated annealing or stochastic restartable hill-climbing algorithm is presented to detect the attack to large target on the ground, which only search local region based-on the adaptation to speed and distance. To attain sound precision, the oriented bounding box algorithm is improved for the usefulness of the avion visual simulation. The algorithms have been validated, and the data showed the performance got improved remarkable.3. The display of visualization is researched under multicenter rare projection. The reasons that cause to the disappearance in the visible distance is analyzed, afterward a improved method based-on ranging model is given. To overcome the inconsistency between the objects and their visualization in avion visual simulation, a display policy of objects at high speed is put forward.4. The prototype of the avion visual simulation system is established to test these algorithms about collision detection in this thesis. Scientific results demonstrate those collision detection methods can solve the collision detection problems in a large-scale complex environment.