利用OpenGL实现卫星系统可视化仿真模型的研究

Study on Visualization Simulation of Satellite System with OpenGL

卫星系统可视化仿真在卫星系统设计、分析、评估等工程实践中扮演着重要的角色。该文基于此需求,且主要针对对地观测卫星系统,按照数值计算与图形演示相分离的思想提出一个基于OpenGL的卫星系统可视化环境,详细讨论了其实现框架、三维和二维模型元素的参数化定义以及相关的投影方法,并在Win32平台上加以实现。该环境成功应用于多卫星系统效能评估与仿真等项目中。

The visualization simulation plays an important role in such engineering applications as satellite system design, analysis and performance evaluation. The environment discussed in this paper is just oriented to these requirements, but is mainly focused on Earth remote sensing satellite systems. The principle that numerical calculation and graphical rendering should be implemented respectively is followed in the developing process of the environment. The models used are constructed on OpenGL, which is becoming an engineering standard of computer graphics community. And the environment is implemented on Win32 operation system and on a PC hardware platform. The software frame, the parameterized models of three dimensions and of two dimensions are represented in detail, as well as the projection methods adopted. This environment has been successfully applied into the project of multi-satellite system performance evaluation.