| 基于VLBI与BDS联合解算ERP的算法研究 |
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| 引用本文： | 刘聪,孟鹏飞,刘鑫.基于VLBI与BDS联合解算ERP的算法研究[J].全球定位系统,2018,43(3):26. |
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| 作者姓名： | 刘聪 孟鹏飞 刘鑫 |
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| 作者单位： | 1.上海勘察设计研究院(集团)有限公司,上海 200438 |
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| 摘 要： | 利用PANDA软件解算2016年第61~91天的MGEX(Multi-GNSS Experiment)服务站的北斗数据,获得地球自转参数(ERP)。利用VieVS2.2软件处理了同时段的甚长基线干涉测量(VLBI)数据。采用基于IERS 08C04序列的定权方法对BDS和VLBI的解算结果进行加权平均,得到综合的ERP值。结果表明,与IERS比较,极移在X方向差值的RMS为0.249 mas,Y方向差值的RMS为0.296 mas,UT1-UTC差值的RMS为0.053 ms.利用BDS与VLBI数据对ERP参数进行联合解算,弥补了BDS解算结果不稳定和VLBI观测不连续的缺陷,使解算结果的稳定性和可靠性均有所提高。
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| 关 键 词： | 地球自转参数 联合 VLBI BDS |
Algorithm Study on the Earth Rotation Parameters with the Combination of VLBI and BDS |
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| Affiliation: | 1.(2.Shanghai Geotechnical Investigations &Design Institute co.,Ltd.200438 shanghai,China2.School of Environment Science and Spatial Informatics,China University of Mining and Technology,10083 Beijing,China |
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| Abstract: | The earth rotation parameters (ERP) are estimated by MGEX station’ data collected in 2016?from 61 to 91 days with PANDA. The ERP are estimated by processing VLBI data during the same period with VieVS2.2. The results of BDS and VLBI are combined in a weighted way to get the comprehensive ERP value, based on?IERS 08C04. The comparisons show that the RMS values of the differences between the series given in this paper and IERS series are 0.249 mas in x-component of polar motion(X-Pole), 0.296 mas in y-component of polar motion(Y-Pole), 0.053 ms in UT1-UTC. The joint calculation of ERP parameters by BDS and VLBI data makes up for the instability of the BDS calculation results and the discontinuity of the VLBI observation, so that the stability and reliability of the results are improved. |
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