北京首都国际机场运行GBAS的考虑

Considerations of Operating GBAS at Beijing Capital International Airport

地基增强系统(GBAS)是国际民航组织发展的新一代卫星导航着陆引导系统。GBAS通过向覆盖区域内的机载用户广播卫星导航差分修正信息实现精确定位和进近引导。简要介绍了北京首都国际机场GBAS台站图上初选情况,结合北京首都机场GBAS设备台站选址布局,分析了甚高频数字广播(VDB)信号覆盖情况,并对机场全球卫星导航系统(GNSS)性能进行了评估分析,验证了北京首都国际机场运行GBAS的可行性,为后续GBAS投入应用提供了技术基础。

The Ground Based Augmentation System(GBAS)is a new generation of satellite navigation landing guidance system developed by the International Civil Aviation Organization.GBAS realizes accurate positioning and approach guidance by broadcasting satellite navigation differential correction information to airborne users in the coverage area.The primary selection situation on the GBAS station map of Beijing Capital International Airport is briefly introduced.Combined with the location and layout of the GBAS equipment station at Beijing Capital Airport,the Very High Frequency(VHF)Data Broadcasting(VDB)signal coverage situation is analyzed,and the Global Navigation Satellite System(GNSS)performance of the airport is evaluated and analyzed,verifying the feasibility of operating GBAS at Beijing Capital International Airport,and providing a technical basis for the subsequent application of GBAS.