地基增强系统(GBAS)飞行试验分析

Analysis of Flight Tests on Ground Based Augmentation System

作为一种新型的、基于卫星导航系统的精密进近和着陆系统,地基增强系统(Ground Based Augmentation System,GBAS)与其他传统的地基无线电精密进近和着陆系统在系统构成和应用上有很大的不同,因此,GBAS系统飞行校验的方法和校验内容也和这些传统的系统不一样。本文分析了在国内多个机场进行GBAS飞行试验的数据结果并据此对GBAS地面子系统的性能进行评估。结果显示GBAS系统可以满足CATI进近和着陆导航系统的精度要求,VDB信号覆盖和数据连续性也可以满足试验要求。

As a new type precise approach and landing system based on satellite navigation system, Ground Based Augmentation System （GBAS） is greatly different with traditional ground-based radio precise approach and landing system on system architecture and application, therefore, flight inspection for GBAS system is also different with ground-based radio system on contents and methods for flight inspection. This paper presents the performance analysis of GBAS ground subsystem according to the flight tests results on several china airports, those flight tests were carried out by China Flight Inspection Center of CAAC. The analysis showed that GBAS system can satisfy the accuracy requirements for CAT I approach and landing navigation system, VDB signal coverage and data continuity also satisfy the test requirements.