Research And Implementation On Key Techniques Of The Virtual Reality Supporting Platform For Space Science Simulation

In recent years, with the rapid development of China’s space science, spacemission simulation based on virtual reality has become increasingly important. Usingvirtual reality technology to simulate the space science missions, not only can thespace scientists get a high efficiency and high reliability design countermeasures, butalso they can have an intuitive presentation. After an in-depth study on virtual realitytechnology, and according to the needs of the space science missions, the thesisestablishes a set of easy extensible, reusable and high interactive virtual realitysimulation system. Through the simulation and visualization of the entity andnon-entity objects in the space, the platform can integrate a variety of experimentaldata and provide many functional modules, including spacecraft in orbit simulation,the internal structure simulation, virtual assembly simulation, space physics fieldvisualization and analysis and starry sky background simulation, etc. These providean effective technical support for the design of the space science mission.This thesis successfully introduces virtual reality technology into the field ofspace science simulation, and has done a wide range of research work on this area.Finally, the thesis designs a virtual reality simulation supporting platform for spacescience simulation system. The main work is as follows:(1)The thesis designs a set of high compatibility and easy expansibility platformarchitecture, the data flow in the platform and a high security database system for theplatform.(2)The thesis researches two different space physics field visualization andanalysis methods: volume rendering and isosurface. With the CUDA technology, thethesis has carried out a method of fast space physics field visualization process andalgorithm, which provides an effective technical support for the design of the space science mission.(3)According to the specific space science tasks, the thesis researches therendering and control methods of the aircraft, the trajectory, as well as the attitudecontrol.(4)The thesis analyzes the principle of one of the key tasks of manipulator virtualassembly, and has done an in-depth research on the collision detection which is one ofthe main techniques. Meanwhile, the thesis designs a detailed simulation process ofthe entire virtual assembly.The significance of this thesis is mainly reflected in the following two points:(1)From the current development of the virtual simulation technology, based onthe VRGIS platform of the laboratory, the thesis designs a virtual reality supportingplatform with good properties in terms of versatility, flexibility and scalability. Thedesign method of the platform provides an important guiding significance in thefuture development and design about space science simulation system using thetechnology of virtual reality.(2)From the effect of the virtual simulation in space science applications, theresearch of the subject can help to improve the efficiency of the design on the spacescience mission. Admittedly, the tasks of space science applications have a series ofcharacteristics, such as high risk, long cycle, etc. The research of virtual realitysupporting platform can reduce the accident probability of space science applicationsand can shorten the development cycle. Meanwhile, it can greatly improve the qualityof the experiments and equipment development, and it can also provide an intuitive,real-time interactive environment for the researchers.