Determination of the Geopotential and Orthometric Height Difference
Based on the Two-Way Satellite Time and Frequency Transfer
and GNSS Observations
1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079,China
Abstract According to general relativity theory, the running rate and orthometric height of precise clock's are closely related, and consequently the height difference can be determined by measuring the running rate difference between two clocks located at two stations. Using the time-frequency difference in observation series by the two-way satellite time and frequency transfer and those by GNSS at four stations released by the Bureau International des Poids et Mesures, we determine the geopotential difference and height difference between arbitrary pairs of the four stations based upon the clock comparison method. Compared to the EGM2008 model results, the standard deviations of the geopotential and height differences are respectively 308.5 m2/s2 and 31.5 m. Experimental results are consistent with the current stability level 10-15 of the atomic clocks equipped in the time-keeping stations.
KONG Xiangxue,SHEN Wenbin,ZHANG Shengjun. Determination of the Geopotential and Orthometric Height Difference
Based on the Two-Way Satellite Time and Frequency Transfer
and GNSS Observations[J]. jgg, 2015, 35(3): 495-498.
KONG Xiangxue,SHEN Wenbin,ZHANG Shengjun. Determination of the Geopotential and Orthometric Height Difference
Based on the Two-Way Satellite Time and Frequency Transfer
and GNSS Observations[J]. jgg, 2015, 35(3): 495-498.
