Research Paper

Science China Earth Sciences

, Volume 55, Issue 7, pp 1079-1086

Precise orbit determination of Beidou Satellites with precise positioning

  • Chuang ShiAffiliated withResearch Center of GNSS, Wuhan University Email author 
  • , QiLe ZhaoAffiliated withResearch Center of GNSS, Wuhan University
  • , Min LiAffiliated withResearch Center of GNSS, Wuhan University
  • , WeiMing TangAffiliated withResearch Center of GNSS, Wuhan University
  • , ZhiGang HuAffiliated withResearch Center of GNSS, Wuhan University
  • , YiDong LouAffiliated withResearch Center of GNSS, Wuhan University
  • , HongPing ZhangAffiliated withState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University
  • , XiaoJi NiuAffiliated withResearch Center of GNSS, Wuhan University
  • , JingNan LiuAffiliated withResearch Center of GNSS, Wuhan University

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Abstract

Chinese Beidou satellite navigation system constellation currently consists of eight Beidou satellites and can provide preliminary service of navigation and positioning in the Asia-Pacific Region. Based on the self-developed software Position And Navigation Data Analysis(PANDA) and Beidou Experimental Tracking Stations (BETS), which are built by Wuhan University, the study of Beidou precise orbit determination, static precise point positioning (PPP), and high precision relative positioning, and differential positioning are carried out comprehensively. Results show that the radial precision of the Beidou satellite orbit determination is better than 10 centimeters. The RMS of static PPP can reach several centimeters to even millimeters for baseline relative positioning. The precision of kinematic pseudo-range differential positioning and RTK mode positioning are 2–4 m and 5–10 cm respectively, which are close to the level of GPS precise positioning. Research in this paper verifies that, with support of ground reference station network, Beidou satellite navigation system can provide precise positioning from several decimeters to meters in the wide area and several centimeters in the regional area. These promising results would be helpful for the implementation and applications of Beidou satellite navigation system.

Keywords

compass/Beidou PANDA precise orbit determination (POD) Beidou difference