摘要
北斗卫星导航系统是我国自主建设的全球卫星导航系统,最新一代北斗三号系统(BDS-3)已于2020年7月31日建成并正式投入运营。由于BDS-3运行时间较短,国内外针对BDS-3的观测数据质量分析研究较少,同时常用的数据质量分析软件不支持分析BDS-3新频点B1C/B2a的观测数据。因此文中编写支持多系统、多频点的GNSS数据质量分析程序GNSSQC,分析全球七大洲9个IGS跟踪站的观测数据。通过研究BDS-3播发的新频点信号B1C/B2a、BDS-3和BDS-2共有的频点B1I/B3I、GPS的L1/L2、Galileo的E1/E5a和GLONASS的G1/G2频点,发现BDS-3的新频点B1C/B2a在信噪比、抗多路径误差和抑制电离层延迟等方面的表现优于其他系统的常用频点,在BDS原有频点B1I/B3I的基础上有较大提升。
BeiDou Navigation Satellite System(BDS)is a global navigation satellite system independently constructed by China.The latest generation BDS-3 system was completed in July 2020.Due to its short running time,there is less quality analysis research work for the system.Besides,the commonly used data quality analysis software does not support the BDS-3 observed data.Therefore,a quality analysis program GNSSQC suitable for multiple systems and frequency was compiled in this thesis.Then large amount of observed data from 9 IGS stations was analyzed.By analyzing the new signals B1C/B2a of BDS-3,the common signals B1I/B3I between BDS-3 and BDS-2,the L1/L2 of GPS,the E1/E5a of Galileo,and the G1/G2 of GLONASS,we find that BDS-3 has better data quality than other systems,especially compared with BDS-2.
作者
段博文
白征东
郭锦萍
DUAN Bowen;BAI Zhengdong;GUO Jinping(Department of Civil Engineering,Tsinghua University,Beijing 100084,China)
出处
《测绘工程》
2024年第3期60-66,80,共8页
Engineering of Surveying and Mapping
关键词
北斗卫星导航系统
IGS观测数据
卫星观测数据质量分析
多路径误差
BeiDou Navigation Satellite System
IGS observed data
quality analysis of satelite observation data
multipath error
