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Contribution of Etalon Observation to Earth Rotation Parameters under a New Observation Scenario

文献类型：期刊论文

作者Zhang, Xiaozhen2,3,4; Kong, Yao1; Lu, Xiaochun2,3,4; Zou, Decai2,3,4
刊名APPLIED SCIENCES-BASEL
出版日期2022-05-01
卷号12期号:10页码:20
关键词satellite laser ranging (SLR) Etalon LAGEOS earth rotation parameters
DOI10.3390/app12104936
英文摘要The standard products of the International Laser Ranging Service (ILRS) are mainly based on the two laser geodynamics satellites (LAGEOS) due to the sparse observations of the Etalon satellites. With improvements in the ability to track high-altitude satellites, ILRS conducted a 3-month Etalon tracking campaign. In this paper, we study the contribution of more Etalon observations in the new observation scenario to weekly ILRS products, such as station coordinates, Earth rotation parameters (ERPs) and satellite orbit. We compare the ILRS products estimated from LAGEOS-only solutions and LAGEOS+Etalon solutions. In the new observation scenario of 2019, the numbers of observations of Etalon satellites are 1.4 and 1.7 times larger than those in 2018. It is shown that the quality of station coordinates, and the satellite orbit of LAGESOS satellites are only slightly affected by the increase in Etalon observations of the campaign. However, for station 1868, which is dedicated to high-altitude satellites, the root mean square (RMS) values of the residuals in the N, E, and U components are improved by 3.1 cm, 2.1 cm and 2.3 cm, respectively. The internal precision of orbit for Etalon-1/2 satellites in tangle and normal directions are improved by 1.5 cm and 2.9 cm, respectively. Most remarkably, the standard deviations for Xp, Yp and LOD can be improved by 6.9%, 14.3% and 5.1%, respectively, compared with the International Earth Rotation System (IERS)-14-C04 series. With our research, the ILRS could increase efforts on Etalon satellite tracking without affecting the routine observations of LAGEOS satellites.
WOS关键词SLR ; CONSTELLATION ; GNSS
资助项目Natural Science Foundation of Shaanxi Province, China[2021JQ-656]
WOS研究方向Chemistry ; Engineering ; Materials Science ; Physics
语种英语
WOS记录号WOS:000804285400001
出版者MDPI
资助机构Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China ; Natural Science Foundation of Shaanxi Province, China
源URL[http://210.72.145.45/handle/361003/13822]  
专题国家授时中心_导航与通信研究室
通讯作者Kong, Yao
作者单位1.Xian Polytech Univ, Sch Elect & Informat, Xian 710048, Peoples R China
2.Chinese Acad Sci, Key Lab Precise Positioning & Time Technol, Xian 710600, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xiaozhen,Kong, Yao,Lu, Xiaochun,et al. Contribution of Etalon Observation to Earth Rotation Parameters under a New Observation Scenario[J]. APPLIED SCIENCES-BASEL,2022,12(10):20.
APA Zhang, Xiaozhen,Kong, Yao,Lu, Xiaochun,&Zou, Decai.(2022).Contribution of Etalon Observation to Earth Rotation Parameters under a New Observation Scenario.APPLIED SCIENCES-BASEL,12(10),20.
MLA Zhang, Xiaozhen,et al."Contribution of Etalon Observation to Earth Rotation Parameters under a New Observation Scenario".APPLIED SCIENCES-BASEL 12.10(2022):20.

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来源：国家授时中心

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