摘要
目前主流三维数字地球平台在数据支持和数据管理方面存在兼容性缺陷。针对三维数字地球平台建设需求,研究了osg Earth的实时地形渲染机制及三维数字地球开发过程中数据加载和海浪模拟技术难点。针对数据实时加载问题,提出基于数据库存储的LOD四叉树模型;针对海浪模拟逼真度不够问题,提出基于改良Higgins算法的海浪模拟。重点结合软件构件化的设计思想,进行了面向实际工程应用的三维数字地球平台开发。
The mainstream 3D digital earth platforms nowdays have compatibility problems in both data support and data management. To meet the requirements of 3D platform for digital earth, the paper makes an in-depth study of the real time terrain rendering mechanism of osgEarth and lucubrates the technical difficulties of data loading and wave simulation in the decelopment process of the platform. For the, the LOD four binomial tree model is put forward for real-time dataload and an improved Higgins algorithm is proposed for more realistic ocean wave simulation. A 3 D digital earth platform for practical engineering application is developed using software component engineering.
出处
《电子科技》
2015年第10期65-68,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(61401499
61174162)
