面向高效仿真的航天器飞行仿真系统设计与实现

Design and Implementation of Spacecraft Flight Simulation System for High Efficiency Simulation

针对航天器飞行仿真系统中海量时空数据高效仿真与处理的工程需求,通过四叉树层次细节算法对仿真系统中海量数据进行分块,并结合金字塔模型对数据块进行高效管理,有效提高了飞行仿真系统中数据处理、地球绘制及地形渲染效率,同时仿真系统通过半拉格朗日法建立航天器尾部火焰模型,有效减少了风力、风向等物理因素对航天器火焰模型的影响.测试结果表明,飞行仿真系统可以准确模拟航天器发射及飞行过程,具有良好的可靠性和较高的运行效率.

Aiming at the engineering needs for the efficient simulation and processing of massive space-time data in spacecraft flight simulation systems,the massive data in the simulation system was divided by the quad-tree level detail algorithm,and the data blocks were efficiently managed in combination with the pyramid model,which effectively improves the efficiency of data processing,earth rendering and terrain rendering in the flight simulation system.At the same time,the simulation system used a semi-Lagrangian method to establish a spacecraft tail flame model,which effectively reduced the impact of physical factors such as wind and wind direction on the spacecraft flame model.Test results show that the flight simulation system can accurately simulate the spacecraft launch and flight process,and have good reliability and high operating efficiency.