| BDS-3单基站差分定位性能提升分析 |
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| 引用本文： | 冷宏宇,秘金钟,徐彦田,王铎,刘艳辉.BDS-3单基站差分定位性能提升分析[J].测绘通报,2021,0(3):1-6. |
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| 作者姓名： | 冷宏宇 秘金钟 徐彦田 王铎 刘艳辉 |
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| 作者单位： | 中国测绘科学研究院,北京100830;辽宁工程技术大学测绘与地理科学学院,辽宁 阜新123000;中国测绘科学研究院,北京100830;自然资源部第一大地测量队,陕西 西安710054 |
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| 基金项目： | 国家重点研发计划(2016YFB0502105;2016YFB0502101);黑龙江省应用技术研究与开发计划(GA17A301);全球连续监测评估系统项目(CFZX0301040308-06);国家基础测绘科技项目(2017KJ0205);辽宁省教育厅辽宁省高等学校基本科研项目(LJ2017QL008)。 |
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| 摘 要： | 针对BDS-3的载波相位动态差分定位性能仍未确定的问题，本文提出了一种分析BDS-3动态差分定位性能的方法。选用中国上海4个参考站2019年第305天所采集的GNSS观测数据，分为两种不同长度基线的情况，进行单基线差分定位解算，通过试验详细地分析了增加使用BDS-3卫星对定位性能提升的情况。试验结果表明，相对于BDS-2卫星，增加使用BDS-3卫星后，可增加3~6颗可见卫星，能够增强卫星空间几何结构。对于短基线情况，载波相位差分定位模糊度固定的成功率从89.3%增加至92.3%，N、E、U 3个方向RMS统计结果分别提高了4%、43.23%及35.60%。该方法能够加快中长基线参数估计的收敛速度，并获得厘米级定位精度。
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| 关 键 词： | BDS-3 动态差分定位 中长基线 定位精度 |
| 收稿时间： | 2020-09-17 |
Analysis on BDS-3 satellite to single base station differential positioning performance |
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| LENG Hongyu,BI Jinzhong,XU Yantian,WANG Duo,LIU Yanhui.Analysis on BDS-3 satellite to single base station differential positioning performance[J].Bulletin of Surveying and Mapping,2021,0(3):1-6. |
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| Authors: | LENG Hongyu BI Jinzhong XU Yantian WANG Duo LIU Yanhui |
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| Institution: | 1. Chinese Academy of Surveying and Mapping, Beijing 100830, China;2. School of Geomatics, Liaoning Technical University, Fuxin 123000, China;3. The First Geodeic Surverying Brigade of Ministry of Natural Resoures, Xi'an 710054, China |
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| Abstract: | With the continuous advancement of the global networking work of the Bei Dou Navigation Satellite System( BDS),it already has global positioning and navigation service capabilities. According to the fact of the RTK positioning performances in the case of BDS-3 is uncertain,this paper puts forward a method to analyze the RTK positioning performance of BDS-3. In order to evaluate this,the observation data collected by the four reference stations in Shanghai on the 305 th day of 2019 is divided into two cases with different baseline lengths. The single-baseline RTK positioning solution is performed. This paper analyzes in details on the accuracy improvement of the combined BDS-2 and BDS-3 through experiments. The experimental results show that compared to BDS-2 only,the combined BDS-2 and BDS-3 increases 3~6 visible satellites,which has a great improvement in the satellite space structure. For a short baseline,effectively improves the ambiguities fixing success rate from 89.3% to 92.3%,and the N,E and U components are improved by 4%,43.23% and 35.60%,respectively. Moreover,more BDS-3 satellites can speed up the convergence of the RTK positioning solution in the case of medium and long baselines and obtain the centimeter-level positioning accuracy. |
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| Keywords: | BDS-3 real-time kinematic medium and long baseline positioning accuracy |
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