Volume 41 Issue 1
Jan.  2016
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WEI Erhu, LIU Wenjie, WEI Jianan, JIN Shuanggen, LIU Jingnan. Estimation of Earth Rotation Parameters and ΔLOD with Combining VLBI and GPS Observations[J]. Geomatics and Information Science of Wuhan University, 2016, 41(1): 66-71,92. DOI: 10.13203/j.whugis20130435
Citation: WEI Erhu, LIU Wenjie, WEI Jianan, JIN Shuanggen, LIU Jingnan. Estimation of Earth Rotation Parameters and ΔLOD with Combining VLBI and GPS Observations[J]. Geomatics and Information Science of Wuhan University, 2016, 41(1): 66-71,92. DOI: 10.13203/j.whugis20130435
shu

Estimation of Earth Rotation Parameters and ΔLOD with Combining VLBI and GPS Observations

  • 1.

    School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;

  • 2.

    Faculty of Built Environment, University of New South Wales, NSW 2052, Australia;

  • 3.

    Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;

  • 4.

    GNSS Research Center, Wuhan University, Wuhan 430079, China

Funds: The National Natural Science Foundation of China, No. 41374012; Comprehensive Reform Research Program for 2012 Undergraduate Teaching in School of Geodesy and Geomatics of Wuhan University, No.201220; Foundation for National Teaching Team of Satellite Navigation Courses, No. 214275482.
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  • Received Date: August 23, 2013
  • Published Date: January 04, 2016
    Graphical Abstract
    • Abstract
  • The Earth rotation parameters (ERP) and the variation of length of day (ΔLOD) are estimated by processing the seventeen IGS stations' data collected in September 2005, January and February 2006 with GAMIT, the estimated results of which are compared with the IGS solutions. Secondly, the ERP and the ΔLOD are estimated by processing VLBI data during the same period with OCCAM 6.2, the results of which are compared with the IVS solutions. Thirdly, the results of GPS and VLBI are combined in a weighted way, based on their internal accord accuracy and IERS 08C04 respectively. Finally, the conclusion not only shows that the interpolation methods have a significant impact on the VLBI results, but also shows that the combining of VLBI and GPS in the second way can improve the stability and reliability of ERP and ΔLOD, which can make up for the shortcoming of the single technique as VLBI or GPS.
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    • References (9)
  • [1]
    Wei Erhu, Jin Shuanggen, Yang Hongzhou, et al. Simulation and Results on Real-Time Positioning of Chang'E-3 Rover with the Same-Beam VLBI Observations[J].Planetary and Space Science, 2013,84:20-27
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    Wei Erhu, Li Guangwen, Chang Liu, et al. On the High-Frequency ERPs with GPS Observations[J]. Geomatics and Information Science of Wuhan University, 2013,38(7):818-821(魏二虎,李广文,畅柳,等.利用GPS观测数据研究高频地球自转参数[J].武汉大学学报·信息科学版,2013,38(7):818-821)
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