Comparison of the Zenith Tropospheric Delay Estimated by Precise
Point Positioning Using BDS and GPS Data Respectively
1 Institute of Geodesy and Geophysics,CAS, 340 Xudong Street, Wuhan 430077, China
2 State Key Laboratory of Geodesy and Earth’s Dynamics,CAS,340 Xudong Street,Wuhan 430077,China
3 University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China
Abstract In order to compare the zenith tropospheric delay (ZTD) estimated by precise point positioning (PPP) using BDS and GPS data respectively under the conditions of the existing constellation, the solutions by BDS only, GPS only and combined BDS/GPS are presented and analyzed. We use real tracking data of a single day from IGS and MGEX stations with precise orbit and precise satellite clocks obtained from CODE and WHIGG. The experimental results show that an accuracy of X mm level can be achieved by GPS, while less than 2cm can be achieved by BDS compare to IGS ZTD products. This suggests that a more accurate result is obtained by GPS than BDS. In addition, a similar result is achieved by combined GPS/BDS as compared to that of GPS only.
FAN Lei,ZHONG Shiming,TAN Bingfeng et al. Comparison of the Zenith Tropospheric Delay Estimated by Precise
Point Positioning Using BDS and GPS Data Respectively[J]. jgg, 2015, 35(1): 67-71.
FAN Lei,ZHONG Shiming,TAN Bingfeng et al. Comparison of the Zenith Tropospheric Delay Estimated by Precise
Point Positioning Using BDS and GPS Data Respectively[J]. jgg, 2015, 35(1): 67-71.
