飞行模拟器EGPWS地形显示模块研究及仿真

Research and simulation of look-ahead terrain display in enhanced ground proximity warning system of flight simulator

增强型近地警告仿真系统(EGPWS)已经成为现代商用客机训练仿真用飞行模拟器不可或缺的一部分。文中对EGPWS仿真系统核心模块——前视地形显示模块进行了研究和分析。利用GDAL库建立了地形数据库;通过空客A320的飞行动力学模型获取了飞机的实时飞行数据;设计和实现了前视地形显示的仿真算法;在MFC中利用OpenGL进行绘图,完成了地形缩放和跟踪航路显示功能。整个仿真实验达到了真实的仿真效果,对EGPWS研究和应用有一定的促进意义。

EGPWS （Enhanced Ground Proximity Warning System） has become an integral part of modern commercial aircraft fight simulator training simulation. In this paper, EGPWS simulation kernel module-look-ahead terrain display module was researched and analysed. The GDAL library terrain database was built;real-time flight data of aircraft was obtained from Airbus A320 flight dynamics model; look-ahead terrain simulation algorithm was also designed and implemented; OpenGL was used to complete terrain scaling and track the route in MFC. The entire simulation receives the real simulation effect and promotes the research and application of EGPWS.