Abstract:

This paper uses precision orbit and clock difference to calculate thirteen IGS tracking stations' coordinates, tropospheric ZTD and receiver clock difference in Asia by Bernese software. Compared with the results issued by CODE, it is found that the N direction convergence accuracy of the static PPP algorithm is obviously better than E direction and U direction, and the coordinate deviation after 4 to 6 hours nearly 1 cm, the NEU RMS mean is 0.45, 0.29, 0.69 cm, ZTD RMS mean is 0.85 cm, receiver clock difference RMS mean is 0.14 ns. The experiment shows that the precision single point positioning algorithm has high accuracy and reliability, it can provide theoretical basis for the actual engineering measurement and related geophysical signal research.

Key words: CODE, IGS tracking station, tropospheric ZTD, receiver clock error