| 利用RADIOASTRON模拟估计的EOP对相关参数精度的灵敏度分析 |
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| 引用本文： | 魏二虎, 周培来, 刘翠芝, 阿里根. 利用RADIOASTRON模拟估计的EOP对相关参数精度的灵敏度分析[J]. 武汉大学学报 ( 信息科学版), 2010, 35(6): 674-678. |
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| 作者姓名： | 魏二虎 周培来 刘翠芝 阿里根 |
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| 作者单位： | 1武汉大学测绘学院,武汉市珞喻路129号,430079;2武汉大学地球空间环境与大地测量教育部重点实验室,武汉市珞喻路129号,430079;3嘉兴市国土资源局秀洲区分局,嘉兴市洪兴西路1670号,314000;4东北大学资源与土木工程学院,沈阳市文化路3号,110003;5新疆测绘局第一测绘院,昌吉州延安南路10号,831100 |
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| 基金项目： | 国家973计划资助项目(2006CB701301)；国家863计划资助项目(2008AA12Z308)；国家自然科学基金资助项目(40974003)；武汉大学教学改革研究项目(20053039)) |
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| 摘 要： | 介绍了包括章动参数的空间VLBI数学模型,探讨了该模型用于大地测量解算的可行性;模拟了针对RADIOASTRON卫星的空间VLBI观测量及相关参数;利用所模拟的时延观测量研究分析包含章动参数的数学模型对EOP参数的可估计性,进而给空间VLBI数学模型中除EOP参数以外的参数赋予不同的先验误差,研究EOP参数对这些先验误差的灵敏度。
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| 关 键 词： | RADIOASTRON 地面-空间VLBI观测量 地球定向参数 先验精度 灵敏度 |
| 收稿时间： | 2010-04-30 |
| 修稿时间： | 2013-07-09 |
Sensitivity of EOP to Priori Precision of Associated Parameters with RADIOASTRON Simulations |
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| WEI Erhu, ZHOU Peilai, LIU Cuizhi, Aligen. Sensitivity of EOP to Priori Precision of Associated Parameters with RADIOASTRON Simulations[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 674-678. |
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| Authors: | WEI Erhu ZHOU Peilai LIU Cuizhi Aligen |
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| Affiliation: | 1School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2The Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,Wuhan 430079,China;(3 Xiuzhou District Branch,The Bureau of Land and Resources Jiaxing,1670 West Hongxing Road,Jiaxing 314000,China;4College of Recourse and Civil Engineering,Northeastern University,3 Wenhua Road,Shenyang 110003,China;5The Second Institute of Xinjiang Bureau of Surveying and Mapping,10 South Yanan Road,Changji 831100,China |
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| Abstract: | Space very long baseline interferometry(SVLBI) is the unique space technology that can directly interconnect the three reference systems,which include the conventional inertial system (CIS) fixed in space and defined by radio sources,the conventional terrestrial system (CTS) fixed to the Earth and defined by a series of observing stations on the ground,and the dynamic reference system defined by the movement of a satellite.An SVLBI mathematical model with nutation parameters is discussed,and its feasibility for estimation of EOPs is discussed.Simulations have been done for the SVLBI observations and related parameters for the RADIOASTRON.With the results of simulation,the sensitivity of EOPs to the priori errors of the associated parameters which include the coordinates of the ground VLBI stations,the orbit parameters of RADIOASTRON satellite,clock parameters and the coordinates of radio source is studied. |
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| Keywords: | RADIOASTRON ground-space VLBI observation EOPs priori errors sensitivity |
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