| Citation: |
ZHONG Shengjian, SHU Fengchun, LI Jinling, WU De, HE Xuan, TONG Fengxian. Simulated Analysis of EOP Measurement Accuracies with Participation of Chinese VGOS Stations in International Observations[J]. Geomatics and Information Science of Wuhan University, 2023, 48(9): 1455-1464. DOI: 10.13203/j.whugis20210204
|
Very long baseline interferometry (VLBI) is one of the main space geodetic techniques for monitoring Earth orientation parameters (EOP). China is building three VLBI global observing system (VGOS) antennas. In order to improve the EOP measurement accuracies, it is necessary to optimize VGOS observing network by extending the domestic VGOS network to an international network.
We set three Chinese VGOS stations located at Shanghai, Urumqi and Beijing as core stations, by adding two international stations selected from four candidate sites located at Hobart of Australia or Bandung of Indonesia, as well as Johannesburg of South Africa or Hawaii of USA, we could form four different 5-station VGOS networks. The performance of EOP measurement accuracies for each network were analyzed based on generation of bulk observing schedules and subsequent large-scale Monte Carlo simulations. We used the repeatability value defined as standard deviation of EOP estimates as an indicator to evaluate the performance of each schedule and each network. We also compared the EOP formal errors of current VGOS observing sessions to our simulation results.
The experiment results show that: (1) The EOP measurement capability of the expanded 5-station networks are all much better than that of the 3-station domestic network. (2) The optimized 5-station network, which consists of 3 domestic antennas, Johannesburg in South Africa and Hobart in Australia, has the best EOP measurement results. Compared to the 3-station domestic network, the repeatability of dUT1, the pole motion XP and YP components are decreased by a factor of 5.7, 2.8 and 18.3, respectively. (3) The optimized 5-station network could reach equal or even better EOP estimates than that of the current IVS VGOS observing networks. We demonstrated that the EOP measurement accuracies can be improved by optimizing the observing network based on Monte Carlo simulations.
The simulation results can be served as a start point for the future development of high-precision EOP observing program in China.
| [1] |
Sovers O J, Fanselow J L, Jacobs C S. Astrometry and Geodesy with Radio Interferometry: Experiments, Models, Results[J]. Reviews of Modern Physics, 1998, 70(4): 1393-1454. doi: 10.1103/RevModPhys.70.1393
|
| [2] |
Schartner M, Böhm J. Optimizing Schedules for the VLBI Global Observing System[J]. Journal of Geodesy, 2020, 94(1), DOI: 10.1007/s00190-019-01340-z
|
| [3] |
乔书波, 李金岭, 柴洪洲, 等. 天球参考架的稳定源选取及其最新实现[J]. 测绘学报, 2010, 39(2): 120-128. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201002005.htm
Qiao Shubo, Li Jinling, Chai Hongzhou, et al. Newly Realization of Celestial Reference Frame by Stable Sources Selection[J]. Acta Geodaetica et Cartographica Sinica, 2010, 39(2): 120-128. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201002005.htm
|
| [4] |
张志斌, 王广利, 刘祥, 等. 中国VLBI网观测地球定向参数能力分析[J]. 武汉大学学报(信息科学版), 2013, 38(8): 911-915. http://ch.whu.edu.cn/article/id/2711
Zhang Zhibin, Wang Guangli, Liu Xiang, et al. Analysis of EOP Determination via Chinese VLBI Network[J]. Geomatics and Information Science of Wuhan University, 2013, 38(8): 911-915. http://ch.whu.edu.cn/article/id/2711
|
| [5] |
Nothnagel A. Very Long Baseline Interferometry[M]//Mathematische Geodüsie/Mathematical Geodesy. Berlin, Germany: Springer, 2020.
|
| [6] |
刘山洪, 鄢建国, 叶茂, 等. 中国VLBI观测网对木星低阶重力场解算的贡献[J]. 武汉大学学报(信息科学版), 2020, 45(6): 862-869. doi: 10.13203/j.whugis20190385
Liu Shanhong, Yan Jianguo, Ye Mao, et al. Contributions of Chinese VLBI Network to the Low Degree Coefficients of the Jupiter Gravity Field[J]. Geomatics and Information Science of Wuhan University, 2020, 45(6): 862-869. doi: 10.13203/j.whugis20190385
|
| [7] |
李金岭, 魏二虎, 孙中苗, 等. 关于我国天测与测地VLBI网络未来建设的讨论[J]. 武汉大学学报(信息科学版), 2010, 35(6): 670-673. http://ch.whu.edu.cn/article/id/959
Li Jinling, Wei Erhu, Sun Zhongmiao, et al. Discussion on Future Configuration Design of Chinese Astrometric and Geodetic VLBI Network[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 670-673. http://ch.whu.edu.cn/article/id/959
|
| [8] |
Shu F, Petrov L, Jiang W, et al. VLBI Ecliptic Plane Survey: VEPS-1[J]. The Astrophysical Journal Letters Supplement Series, 2017, 230(2): 13. doi: 10.3847/1538-4365/aa71a3
|
| [9] |
范昊鹏, 孙中苗. 我国新一代VLBI网性能分析[J]. 测绘科学技术学报, 2018, 35(2): 141-146. https://www.cnki.com.cn/Article/CJFDTOTAL-JFJC201802007.htm
Fan Haopeng, Sun Zhongmiao. Capability Analysis of the New-Generation VLBI Network in China[J]. Journal of Geomatics Science and Technology, 2018, 35(2): 141-146. https://www.cnki.com.cn/Article/CJFDTOTAL-JFJC201802007.htm
|
| [10] |
Petrachenko B, Niell A, Behrend D, et al. Design Aspects of the VLBI2010 System[C]//International VLBI Service for Geodesy and Astrometry 2009 Annual Report, Greenbelt, USA, 2010.
|
| [11] |
Haas R, Nothnagel A, Petrachenko B. VGOS: The VLBI Global Observing System of the IVS[J]. IAU General Assembly, 2015, 29: 2257511.
|
| [12] |
孙中苗, 范昊鹏. VLBI全球观测系统(VGOS)研究进展[J]. 测绘学报, 2017, 46(10): 1346-1353. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201710019.htm
Sun Zhongmiao, Fan Haopeng. Research Progress of VLBI Global Observing System (VGOS)[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(10): 1346-1353. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201710019.htm
|
| [13] |
刘磊, 郑为民, 张娟, 等. 中国VLBI网软件相关处理机测地应用精度分析[J]. 测绘学报, 2017, 46(7): 805-814. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201707002.htm
Liu Lei, Zheng Weimin, Zhang Juan, et al. Precision Analysis of Chinese VLBI Network Software Correlator for Geodetic Applications[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(7): 805-814. https://www.cnki.com.cn/Article/CJFDTOTAL-CHXB201707002.htm
|
| [14] |
王广利, 叶叔华, 钱志瀚, 等. 亚太地区空间地球动力学研究计划(APSG)首期VLBI联测结果[J]. 中国科学(A辑), 2001, 44(2): 259-264. https://www.cnki.com.cn/Article/CJFDTOTAL-JAXK200006012.htm
Wang Guangli, Ye Shuhua, Qian Zhihan, et al. Measurements of the VLBI Experiments During the First Campaign of the Asian-Pacific Space Geodynamics (APSG) Program[J]. Science in China Series A: Mathematics, 2001, 44(2): 259-264. https://www.cnki.com.cn/Article/CJFDTOTAL-JAXK200006012.htm
|
| [15] |
李斐, 邵先远, 曲春凯, 等. 利用2006—2015年VLBI数据进行地球定向参数解算与分析[J]. 武汉大学学报(信息科学版), 2019, 44(11): 1581-1587. doi: 10.13203/j.whugis20170365
Li Fei, Shao Xianyuan, Qu Chunkai, et al. Solution and Analysis of Earth Orientation Parameters with 2006-2015 VLBI Observation[J]. Geomatics and Information Science of Wuhan University, 2019, 44(11): 1581-1587. doi: 10.13203/j.whugis20170365
|
| [16] |
Mccallum L, Wakasugi T, Shu F. Current Activities and Plans of the AOV-Asia-Oceania VLBI Group[C]//International VLBI Service for Geodesy and Astrometry 2018 General Meeting Proceedings: Global Geodesy and the Role of VGOS-Fundamental to Sustainable Development, Longyearbyen, Norway, 2019.
|
| [17] |
Niell A, Whitney A, Petrachenko B, et al. VLBI2010: Current and Future Requirements for Geodetic VLBI Systems[R]. Longyearbyen, Norway: IVS Annual Report NASA/TP-2006-214136, 2005.
|
| [18] |
Sun J, Böhm J, Nilsson T, et al. New VLBI2010 Scheduling Strategies and Implications on the Terrestrial Reference Frames[J]. Journal of Geodesy, 2014, 88(5): 449-461.
|
| [19] |
Metropolis N, Ulam S. The Monte Carlo Method[J]. Journal of the American Statistical Association, 1949, 44(247): 335-341.
|
| [20] |
Pany A, Böhm J, MacMillan D, et al. Monte Carlo Simulations of the Impact of Troposphere, Clock and Measurement Errors on the Repeatability of VLBI Positions[J]. Journal of Geodesy, 2011, 85(1): 39-50.
|
| [21] |
Schartner M, Böhm J, Nothnagel A. Optimal Antenna Locations of the VLBI Global Observing System for the Estimation of Earth Orientation Parameters[J]. Earth, Planets and Space, 2020, 72(1), DOI: 10.1186/s40623-020-01214-1.
|
| [22] |
Wresnik J, Böhm J, Schuh H. Monte Carlo Simulations for VLBI2010[C]//The 18th European VLBI for Geodesy and Astrometry Work Meeting, Vienna, Austria, 2007.
|
| [23] |
Hidayat T, Munir A, Dermawan B, et al. Radio Frequency Interference Measurements in Indonesia[J]. Experimental Astronomy, 2014, 37(1): 85-108.
|
| [24] |
Schartner M. Optimizing Geodetic VLBI Schedules with VieSched++[D]. Vienna, Austria: Department für Geodüsie und Geoinformation, 2019.
|
| [25] |
Boehm J. Vienna Mapping Functions in VLBI Analyses[J]. Geophysical Research Letters, 2004, 31: L01603.
|
| [26] |
Treuhaft R N, Lanyi G E. The Effect of the Dynamic Wet Troposphere on Radio Interferometric Measurements[J]. Radio Science, 1987, 22(2): 251-265.
|
| [27] |
Nilsson T, Haas R, Elgered G. Simulations of Atmospheric Path Delays Using Turbulence Models[C]//The 18th European VLBI for Geodesy and Astrometry Working Meeting: Goewissenschaftliche Mitteilungen, Schriftenreihe der Studienrichtung Vermessung und Geoinformation, Technische Universitat Wien, Vienna, Austria, 2007.
|
| [28] |
Herring T A, Davis J L, Shapiro I I. Geodesy by Radio Interferometry: The Application of Kalman Filtering to the Analysis of very Long Baseline Interferometry Data[J]. Journal of Geophysical Research, 1990, 95(B8): 12561.
|
| [29] |
Bolotin S, Baver K, Gipson J, et al. The First Release of nuSolve[C]//IVS 2012 General Meeting Proceedings, NASA/CP-2012-217504, Madrid, Spain, 2012.
|
| [30] |
魏二虎, 李雪川, 易慧, 等. 利用2008年VLBI观测数据进行EOP参数的解算与分析[J]. 武汉大学学报(信息科学版), 2010, 35(8): 988-990+995. http://ch.whu.edu.cn/article/id/1035
Wei Erhu, Li Xuechuan, Yi Hui, et al. On EOP Parameters Based on 2008 VLBI Observation Data[J]. Geomatics and Information Science of Wuhan University, 2010, 35(8): 988-990+995. http://ch.whu.edu.cn/article/id/1035
|
| [31] |
王波, 鄢建国, 高梧桐, 等. EOP预报误差对深空探测器精密定轨结果影响分析[J]. 武汉大学学报(信息科学版), 2022, DOI: 10.13203/j.whugis20220004.
Wang Bo, Yan Jianguo, Gao Wutong, et al. The Analysis of the Impact of EOP Prediction Errors on the Orbit Determination of Deep-Space Spacecraft[J]. Geomatics and Information Science of Wuhan University, 2022, DOI: 10.13203/j.whugis20220004.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: