全球定位系统2024，Vol.49Issue(3)：1-9,9.DOI:10.12265/j.gnss.2024052
Galileo高精度定位服务的空间信号误差及精密单点定位评估
Spatial signal error and precise point positioning evaluation of Galileo high accuracy service
摘要
Abstract
The high accuracy service(HAS)of the Galileo system uses E6B signals to broadcast free precision satellite orbit,clock deviation and code deviation correction information to users around the world,which is of great significance in the field of high-precision real-time satellite applications.Evaluating the spatial signal error and precise point positioning performance is an important prerequisite for using HAS well.Based on the HAS orbital clock products from December 1 to 31,2023,the root mean square errors(RMSE)of the Galileo satellite orbit products were 4.16 cm,8.42 cm and 7.62 cm in the radial(R),tangential(A)and normal(C)directions,and 4.52 cm,9.99 cm and 7.07 cm in GPS,respectively,while the standard deviation(STD)of the Galileo clock products was 0.16 ns and 0.26 ns for GPS.Precise point positioning(PPP)was carried out based on the observation data of 10 stations in Europe.The results show that the positioning accuracy of Galileo in the east(E),north(N)and zenith(U)directions is 6.44 cm,4.65 cm and 11.36 cm,GPS is 7.42 cm,5.78 cm and 12.04 cm,and the joint positioning is 4.11 cm,3.10 cm and 7.56 cm,respectively.The results indicate that HAS can meet the high-precision positioning requirements.关键词
Galileo高精度定位服务(HAS)/可用性分析/空间信号误差/精密单点定位(PPP)Key words
Galileo high accuracy service/availability analysis/space signal error/precise point posi-tioning分类
天文与地球科学引用本文复制引用
丁尧,方荣新,陈国,胡冰燕,程毅凡..Galileo高精度定位服务的空间信号误差及精密单点定位评估[J].全球定位系统,2024,49(3):1-9,9.基金项目
国家自然科学基金(42274025,42204019) （42274025,42204019）
武汉大学2024年大学生创新训练重点培育项目(202410486149) （202410486149）
