Effect of tracking stations distribution on the estimation of differential code biases by GPS satellites based on uncombined precise point positioning

被引：0

作者：

Fan L. ^{[1
,2
,3
]}

Zhong S. ^{[1
,2
]}

Li Z. ^{[1
,2
,4
]}

Ou J. ^{[1
,2
]}

机构：

[1] Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan

[2] State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan

[3] GNSS Research Center, Wuhan University, Wuhan

[4] Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing

来源：

Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2016年 / 41卷 / 03期

基金：

中国国家自然科学基金;

关键词：

DCB(differential code bias); GPS; IGGDCB; Local ionospheric modeling; Uncombined PPP;

D O I：

10.13203/j.whugis20140114

中图分类号：

学科分类号：

摘要：

Ionospheric observations including the slant total electron content (STEC) and satellite-receiver's differential code bias(DCB) can be extracted precisely by an uncombined precise point positioning(PPP) technique. Moreover, a GPS satellite DCB can be determined using the “IGGDCB” approach at high accuracy. A new strategy for combining uncombined PPP and “IGGDCB” is proposed in this paper to investigate the effect of distribution of tracking stations on the estimation of DCB in GPS satellites. Consecutive 15-day data from different numbers of IGS stations in Europe and globally during a high solar activity period were chosen for this study. In order to assess the precision of satellite DCB estimates in this experiment, CODE monthly satellite DCB estimates were considered as the true value. Our experimental results show that satellite DCB can be calibrated precisely by the proposed method. The RMS of the difference between DCB estimates and corresponding CODE value is less than 0.2 ns based on the data from Europe, while it is less than 0.1ns based on the global data. These results were better than the results from the smoothed code data. In addition, the day-to-day variation can be reduced with the increase of contributed stations, whilst the RMS and day-to-day variation of daily satellite DCB estimates can be both reduced based on the global data. © 2016, Wuhan University All right reserved.

引用

页码：316 / 321

页数：5

共 12 条

[1]

Li Z., Yuan Y., Li H., Et al., Two-step Method for the Determination of the Differential Code Biases of COMPASS Satellites, Journal of Geodesy, 86, 11, pp. 1059-1076, (2012)

[2]

Dai W., Jiao W., Jia X., Application Research for Compass Navigation Satellite Interfrequency Bias Correction Terms, Journal of Geomatics Science and Technology, 26, 5, pp. 367-369, (2009)

[3]

Sardon E., Zarraoa N., Estimation of Total Electron Content Using GPS Data: How Stable are the Differential Satellite and Receiver Instrumental Biases, Radio Science, 32, 5, pp. 1899-1910, (1997)

[4]

Komjathy A., Sparks L., Wilson B.D., Et al., Automated Daily Processing of more than 1 000 Ground-Based GPS Receivers for Studying Intense Ionospheric Storms, Radio Science, 40, 6, pp. 293-304, (2005)

[5]

Europe Center for Orbit Determination in Europe, CODE Analysis Strategy Summary, (2013)

[6]

Chang Q., Zhang D., Xiao Z., Et al., A Method for Estimating GPS Instrumental Biases and Its Application in TEC Calculation, Chinese Journal of Geophysics, 44, 5, pp. 596-601, (2001)

[7]

Brunini C., Azpilicueta F.J., Accuracy Assessment of the GPS-based Slant Total Electron Content, Journal of Geodesy, 83, 8, pp. 773-785, (2009)

[8]

Zhang H., Shi C., Tang W., United Solution to Polynomial VTEC Modeling and DCB Analysis Using Ground-Based GPS Observations, Geomatics and Information Science of Wuhan University, 33, 8, pp. 805-809, (2008)

[9]

Li W., Cheng P., Bei J., Regional Ionosphere Delays' Calibration and Accuracy Assessment Based on Uncombined Precise Point Positioning, Geomatics and Information Science of Wuhan University, 36, 10, pp. 1200-1203, (2011)

[10]

Zhang B., Ou J., Yuan Y., Et al., Calibration of Slant Total Electron Content (sTEC) and Satellite-Receiver's Differential Code Biases (DCBs) with Uncombined Precise Point Positioning (PPP) Technique, Acta Geodaetica et Cartographica Sinica, 40, 4, pp. 447-453, (2011)

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