关键词: 空间环境, 三维地球, 仿真技术, 移动三维

Abstract: Based on the study of the spatial visualized simulation, a novel visualized simulation technology of spatial objects built on mobile platform was developed. Critical technologies include the organization, scheduling and mapping with the background of 3D starry sky, calculation and visualized simulation of spacecraft orbit, and storage, organization, dynamic scenario-based updated rendering of 3D digital earth mega geographic data. A fractionized tile algorithm covering the scope of screen was proposed. Projection ranged on the screen was taken as the criteria of fractionation of tiles in the algorithm. Testing results show that the fractionation is correct. Spatial simulation system with C/S architecture on the mobile platform was designed due to the relatively low efficiency and poor ability to store of mobile equipment. Testing results show that the system can run smoothly on the Android operating system with favorable user experience. The visualization effect is satisfactory.

Key words: spatial environment, 3D earth, simulation technology, mobile 3D rendering