| BDS全球定位服务能力及天顶对流层延迟估计性能评估 |
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| 引用本文： | 鄂盛龙,周刚,龙海,罗颖婷,许海林,饶章权,周永言.BDS全球定位服务能力及天顶对流层延迟估计性能评估[J].大地测量与地球动力学,2021,41(8):789-794. |
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| 作者姓名： | 鄂盛龙 周刚 龙海 罗颖婷 许海林 饶章权 周永言 |
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| 作者单位： | 广东电网有限责任公司电力科学研究院,广州市东风东路水均岗8号,510620;武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号,430079 |
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| 摘 要： | 基于自行解算的GPS/BDS精密轨道和钟差产品，选取全球均匀分布的9个MGEX观测站1周的观测数据，使用GAMP软件进行BDS静态精密单点定位（PPP）解算，以评估BDS全星座的全球定位服务能力及天顶对流层延迟（ZTD）的估计性能。实验结果表明，BDS静态PPP解算收敛后水平方向精度优于1 cm，高程方向精度在1 cm左右，定位精度已与GPS相当；其天顶对流层估计精度优于1 cm，与GPS PPP解算的ZTD误差的RMS值相差在1 mm以内。总体来说，BDS全星座已具备与GPS相当的全球定位服务能力和ZTD反演性能。
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| 关 键 词： | 北斗卫星导航系统 精密单点定位 天顶对流层延迟 性能评估 |
Performance Evaluation of BDS Global Positioning Service and Zenith Tropospheric Delay Estimation |
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| E Shenglong,ZHOU Gang,LONG Hai,LUO Yingting,XU Hailin,RAO Zhangquan,ZHOU Yongyan.Performance Evaluation of BDS Global Positioning Service and Zenith Tropospheric Delay Estimation[J].Journal of Geodesy and Geodynamics,2021,41(8):789-794. |
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| Authors: | E Shenglong ZHOU Gang LONG Hai LUO Yingting XU Hailin RAO Zhangquan ZHOU Yongyan |
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| Abstract: | To evaluate the performance of BDS global positioning service and zenith tropospheric delay estimation, based on the observations of 9 MGEX tracking stations evenly distributed around the world in a one-week period, we use GAMP software to perform BDS coordinate-static PPP with the self-calculated precise orbit and clock products of GPS/BDS. Experimental results show that the horizontal accuracy for BDS coordinate-static PPP mode is better than 1 cm, the vertical accuracy is around 1 cm, and the positioning accuracy is comparable with GPS. The estimated accuracy of zenith tropospheric delay is better than 1 cm, and the difference of RMS of errors is within 1 mm compared with the result calculated by GPS PPP. In general, the BDS full constellation already has global positioning service capabilities and ZTD inversion performance equivalent to GPS. |
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| Keywords: | BDS precise point positioning zenith tropospheric delay performance evaluation |
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