基于数字海洋环境的视景仿真系统研究

对海洋地理信息的三维可视化技术进行了深入研究。以MultiGen Creator和Veea为三维视景开发平台研究了三维模型的重建问题和海洋环境的生成技术，主要包括海洋信息的提取和实物建模，利用大规模数据库管理技术实现场景的区域化管理，采用星际模型和粒子技术模拟自然环境等。最后论文将生成的数字海洋环境嵌入潜艇航行训练模拟器的三维视景仿真系统中，根据潜艇当前的位置和姿态实时更新场景数据，为训练人员提供更加逼真的训练环境。仿真结果表明，该视景系统能满足模拟器的实时性和逼真性要求。

Research on Visual Simulation System Based on Digital Marine Environment

The 3D visualization technique for the marine-oriented geographical information was investigated. . The professional platforms such as MultiGen Creator and Vega were employed for the reconstruction of 3D model and the generation of marine environment. This technique was characterized with a couple of sequel processes including extracting marine data, modeling realistic object, regionally managing scene databases by using the Large Area Database Management (LADBM) and simulating natural environment by exploiting ephemeris model together with particle system. Finally, the obtained 3D marine environment was embedded in the visual system of the submarine voyage-training simulator. The update of the sub-system was accordingly achieved in terms of the current position and the attitude of submarine, and therefore satisfied the real-time requirement of the training system, which had also been proved by the experimental results.