| 高精度公共参数对轨道精度的影响分析 |
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| 引用本文： | 郑 涛,徐爱功,杨 虎,唐龙江.高精度公共参数对轨道精度的影响分析[J].大地测量与地球动力学,2020,40(6):618-623. |
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| 作者姓名： | 郑 涛 徐爱功 杨 虎 唐龙江 |
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| 作者单位： | 辽宁工程技术大学测绘与地理科学学院 |
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| 基金项目： | 国家自然科学基金(41504030,41601501);国家重点研发计划(2016YFC0803102)。 |
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| 摘 要： | 受BDS-2、GLONASS、Galileo卫星跟踪站在全球范围内数量少且分布不均匀的影响,在BDS-2、GLONASS、Galileo定轨过程中需要联合GPS解算高精度公共参数,以提高轨道精度。为优化联合定轨的数据处理策略,需要重点分析联合定轨中公共参数对轨道的影响,从理论上分析无电离层组合中公共测站坐标、对流层和接收机钟差参数对多系统联合定轨的贡献量,然后开展单系统和多系统联合定轨实验。结果表明,高精度的公共参数使各单系统的定轨精度有显著提升,BDS-2的IGSO及GLONASS、Galileo定轨精度提升20%,BDS-2的MEO定轨精度提升60%。
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| 关 键 词： | 多系统 联合 公共参数 轨道 |
Analysis of Influence of High Precision Public Parameters on Orbit Accuracy |
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| ZHENG Tao,XU Aigong,YANG Hu,TANG Longjiang.Analysis of Influence of High Precision Public Parameters on Orbit Accuracy[J].Journal of Geodesy and Geodynamics,2020,40(6):618-623. |
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| Authors: | ZHENG Tao XU Aigong YANG Hu TANG Longjiang |
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| Institution: | (School of Mapping and Geographical Science,Liaoning Technical University,88 Yulong Road,Fuxin 123000,China) |
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| Abstract: | Due to the small number and uneven distribution of tracking stations of BDS-2, GLONASS, Galileo satellites, it is necessary to obtain high-precision common parameters with GPS in the actual BDS-2/GLONASS/Galileo orbit determination process to improve orbit accuracy. In order to optimize the data processing strategy of joint orbit determination, it is necessary to analyze the influence of the common parameters in the joint orbit determination on the orbit. This paper analyzes the contribution of common station coordinates, tropospheric and receiver clock parameters, to multi-system joint orbit determination in the non-ionosphere combination from the theoretical point of view. Finally, we carry out single-system and multi-system joint orbit determination experiments. The experimental results show that the high-precision common parameters have a significant effect on the accuracy of the orbit determination of each single system. The accuracy of the orbit accuracy of the IGSO of BDS-2, GLONASS, and Galileo can be improved by almost 20%, and the orbit accuracy of the MEO of BDS-2 can be improved by almost 60%. |
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| Keywords: | multi-system joint public parameters orbit |
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