千寻北斗地基增强网络下的实时观测数据解码及定位性能分析

2016年5月,千寻位置网正式公开运营北斗地基增强系统。作为国内首家商用北斗地基增强系统,千寻位置网可以为全国大部分范围内的用户提供高精度定位服务。本文首先介绍了千寻北斗地基增强系统观测数据的传输格式,然后在武汉、重庆两地分别对千寻北斗地基增强网络的RTK、RTD定位服务进行了性能测试。结果表明,其定位性能能够达到实时RTK厘米级和RTD亚米级,同时验证了解码程序的正确性。本文的研究内容对于北斗地基增强系统的应用推广具有一定的借鉴意义。

Real-time Observation Decoding and Positioning Analysis Based on Qianxun BeiDou Ground Based Augmentation System

As the first commercial BeiDou ground based augmentation system ( GBAS ) in China, the Qianxun location network announced in May 2016 is able to provide high-precision positioning service for users in majority territory.This paper first introduces the message formatting and decoding broadcast by the Qianxun Beidou GBAS, and then evaluates the RTK and RTD positioning performance in Wuhan and Chongqing.Numerical results show that the positioning precision can reach centimeter for RTK and sub-meter for RTD, respectively.The aim of this paper is to provide a basis for the promotion of BeiDou GBAS.