天津GNSS地基增强系统测试验证探索及实施

地基增强系统地面站进行载波平滑伪距，进行完好性监测，产生伪距校正信息，并广播差分信息报文，机载用户接收 GBAS 信号进行伪距差分定位，完成进近引导。本文主要介绍了 GBAS 系统的系统组成、工作原理、重点介绍了 GBAS 测试以及数据分析等，为国产 GBAS 地面设备进行测试验证及性能评估，开展合格审定测试工作提供了技术基础。

Exploration and Implementation of Test Verification of GNSS Ground Based Augmentation System in Tianjin

Ground stations of GBAS carry out carrier smoothing pseudo distance and the integrity monitoring, generate pseudo-range correction information and broadcast differential GBAS TYPE message and then airborne users receive GBAS signal for pseudo-range differential positioning, and complete approach guidance. This paper mainly introduces the system composition, working principle, GBAS testing and data analysis, etc. of the GBAS system, which provides a technical basis for the test verification and performance evaluation of domestic GBAS ground equipment and the qualification verification and testing.