中文核心期刊
CNKI期刊全文数据库
中国科学引文数据库(CSCD)源期刊
中国科技论文统计源期刊
万方数据知识服务平台
英国《科学文摘》(SA)
美国化学文摘(CA)
俄罗斯《文摘杂志》(AJ)
德国《天文学与天体物理学文摘》(AAA)
英国《中国天文学和天体物理学》(SCI收录)全文摘译期刊之一
《中国学术期刊文摘》
《中国物理文摘》
《中国天文学文摘》

Chinese Journal of Space Science ›› 2019, Vol. 39 ›› Issue (1): 118-128.doi: 10.11728/cjss2019.01.118

Previous Articles     Next Articles

Evaluation on UERE and Positioning Accuracy of BDS

LIU Ruihua, WANG Ying, WANG Jian   

  1. College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300
  • Received:2018-01-24 Revised:2018-10-28 Online:2019-01-15 Published:2019-01-30

Abstract:

User Ranging Error (URE) and User Equipment Error (UEE) are the main factors affecting the positioning accuracy. Civil aviation is the high-end user of BeiDou Navigation Satellite System (BDS). It is necessary to monitor the coverage and service performance of BDS at civil aviation airports. Based on the measured data of BDS at four civil aviation airport observatories, this paper introduces the satellites visibility of each airport, URE solution method, ionospheric delay correction model, tropospheric delay correction model and the evaluation of positioning accuracy. The results show that the number of visible satellites is from 6 to 14, which meets the positioning requirements. At 95% confidence level, the ionospheric delay is better than 7.50m, the tropospheric delay is better than 13.28m, and the URE values of Geostationary Earth Orbit (GEO) satellites, Inclined Geosynchronous Orbit (IGSO) satellites and Medium Earth Orbit (MEO) satellites are better than 2.36m, 1.72m and 2.59m respectively, which meet the requirements of Beidou open service performance specifications. At 95% confidence level, the positioning accuracy is better than 3.63m in the horizontal direction and better than 6.98m in the vertical direction. The coverage and service performance of BDS at the civil airport monitoring stations are good.

Key words: Beidou Navigation Satellite System (BNSS), Ionospheric delay, Tropospheric delay, User Ranging Error (URE), Positioning accuracy

CLC Number: