| 北斗三号全球卫星导航系统的广播星历精度评估 |
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| 引用本文： | 王朝辉,马下平,严丽,鲁铁定,赵庆志. 北斗三号全球卫星导航系统的广播星历精度评估[J]. 测绘通报, 2021, 0(1): 59-65,98. DOI: 10.13474/j.cnki.11-2246.2021.0011 |
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| 作者姓名： | 王朝辉 马下平 严丽 鲁铁定 赵庆志 |
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| 作者单位： | 西安科技大学测绘科学与技术学院,陕西 西安710054;西安科技大学测绘科学与技术学院,陕西 西安710054;上海市空间导航与定位技术重点实验室,上海200030;东华理工大学测绘工程学院,江西 南昌330013 |
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| 基金项目： | 江西省自然科学基金 ;国家自然科学基金;江西省教育厅科学技术研究项目 |
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| 摘 要： | 为了及时评估北斗三号全球卫星导航系统(BDS-3)广播星历的精度,本文基于2018年3月10—22日和2019年7月2—14日的BDS-2、BDS-3广播星历,以及武汉大学发布的精密星历数据,从北斗卫星的星历误差、轨道误差和空间信号测距精度(SISRE)3个方面进行了全面比较与分析.结果表明:BDS-3的广播星历星历误...
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| 关 键 词： | BDS-3 广播星历 空间信号测距误差 轨道精度 评估 |
| 收稿时间： | 2020-03-12 |
| 修稿时间： | 2020-10-13 |
Accuracy assessment of BDS-3 broadcast ephemeris |
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| WANG Zhaohui,MA Xiaping,YAN Li,LU Tieding,ZHAO Qingzhi. Accuracy assessment of BDS-3 broadcast ephemeris[J]. Bulletin of Surveying and Mapping, 2021, 0(1): 59-65,98. DOI: 10.13474/j.cnki.11-2246.2021.0011 |
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| Authors: | WANG Zhaohui MA Xiaping YAN Li LU Tieding ZHAO Qingzhi |
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| Affiliation: | 1. School of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China;2. Shanghai Key Laboratory of Space Navigation and Positioning Techniques, Shanghai 200030, China;3. Faculty of Geomatics, East China University of Technology, Nanchang 330013, China |
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| Abstract: | In order to evaluate the accuracy of Bei Dou-3 global navigation satellite system( BDS-3),broadcast ephemeris timely,this paper makes a comprehensive comparison and analysis of ephemeris error,orbital error and SISRE,signal in space range error. The data of broadcast ephemeris and precise ephemeris is released by Wuhan University of BDS-2 and BDS-3 from March 10 to March 22,2018 and July 2 to July 14,2019. The results show that the RMSE of the broadcast ephemeris of BDS-3 are basically better than 1.5 m,and the RMSE of BDS-2 GEO,IGSO and MEO satellites are less than respectively 3. 0,3. 0,2. 0 m. The orbit errors of BDS-3 are basically better than 1.0 m,and the errors in the R direction are superior than the T and N directions,respectively 0.1,1.0,0.5 m.The orbit errors of the BDS-2 in the three directions of the radial R,T and N are 1,3,3 m. The SISRE of BDS-3 are better than 0.25 m,and SISRE of BDS-2 GEO,IGSO and MEO satellites are better than 0.5,2.0,0.5 m respectively. The results of this paper reflect that the BDS-3 signal is stable and its accuracy is improved. |
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| Keywords: | BDS-3 broadcast ephemeris SISRE orbital accuracy evaluation |
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