Improvement of Earth orientation parameters estimate with Chang'E-1 Delta VLBI observations
文献类型：期刊论文
| 作者 | Wei, Erhu1; Yan, Wei2; Jin, Shuanggen3 ; Liu, Jingnan4; Cai, Jianqing5
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| 刊名 | JOURNAL OF GEODYNAMICS
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| 出版日期 | 2013-12-01 |
| 卷号 | 72期号:1页码:46-52 |
| 关键词 | Chang'E-1 Delta VLBI EOP Orbit determination |
| 英文摘要 | Earth orientation parameters (EOP) are essential for the interconnection of different reference systems involved in Chang'E-1 (CE-1) lunar exploration, such as the Earth fixed reference system, celestial reference system and dynamical reference system. To improve the accuracy of predicted EOP values and to reduce their influence on the accuracy of CE-1 orbital parameters, a relativistic mathematical model of differential VLBI (Delta VLBI) time delay observations for the CE-1 transfer orbit is derived in this paper, which is generated by differencing CE-1 time delay observations with a simulated radio source's time delay observations. The CE-1 orbital parameters and FOP are simultaneously estimated with least squares adjustment using the measured time delay observations of the CE-1 transfer orbit. The results show that the accuracy of the CE-1 orbit and EOP estimates is improved by the CE-1 Delta VLBI observations with optimal orbital arc length and the win-win approach is able to improve the accuracy of both the CE-1 orbital parameters and EOP estimates. The estimated CE-1 orbital accuracy can achieve a few hundred meters and the estimated EOP accuracies are better than their predicted values. (C) 2013 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000329482500005 |
| 源URL | [http://119.78.226.72/handle/331011/18027]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Wuhan Univ, GNSS Res Ctr, Wuhan 430079, Peoples R China 5.Univ Stuttgart, Inst Geodesy, D-70174 Stuttgart, Germany |
| 推荐引用方式 GB/T 7714 | Wei, Erhu,Yan, Wei,Jin, Shuanggen,et al. Improvement of Earth orientation parameters estimate with Chang'E-1 Delta VLBI observations[J]. JOURNAL OF GEODYNAMICS,2013,72(1):46-52. |
| APA | Wei, Erhu,Yan, Wei,Jin, Shuanggen,Liu, Jingnan,&Cai, Jianqing.(2013).Improvement of Earth orientation parameters estimate with Chang'E-1 Delta VLBI observations.JOURNAL OF GEODYNAMICS,72(1),46-52. |
| MLA | Wei, Erhu,et al."Improvement of Earth orientation parameters estimate with Chang'E-1 Delta VLBI observations".JOURNAL OF GEODYNAMICS 72.1(2013):46-52. |
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来源：上海天文台
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