The Study On Ocean Geographic Environment Based On Virtual Reality

The traditional method of describing the ocean natural geographic environment is realized by chart. But it is difficult to obtain the ocean geographic information for the general users. So put the chart into 3D chart and import virtual reality technique into the ocean environment with reality and realize 3D scene of ocean environment, are gradually becoming a study field that peoples concern. The main contents and results of research in this paper are shown as following:It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equationMultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished.Then introduced the theory of Large Area Database Management (LADBM) and realized the Large area database management;In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.Derive ocean geographic information database from actual chart, and according to these database build ocean terrain and entity model database in the simulation system. Realized the simulation of space effect under water, ocean surface rendering, LADBM. Meet the need of ocean environment simulation for reality and real-time, it is possible to be extended and applied in some system that contains virtual ocean war field.