| 天线相位中心改正对BDS二代卫星精密定位的影响分析 |
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| 引用本文： | 王娜,段龙飞,徐卫东,王志一.天线相位中心改正对BDS二代卫星精密定位的影响分析[J].测绘通报,2020,0(10):68-73. |
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| 作者姓名： | 王娜 段龙飞 徐卫东 王志一 |
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| 作者单位： | 1. 中国地质环境监测院, 北京 100081;2. 中国矿业大学(北京)地球科学与测绘 工程学院, 北京 100083;3. 北京九碧木测信科技有限公司, 北京 100085 |
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| 基金项目： | 中国地质调查局“全国矿山地质环境综合调查与评价”项目（202018000000180609） |
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| 摘 要： | 精确改正卫星端PCO/PCV偏差是实现精密单点定位的重要前提。本文对目前多家分析中心提供的不同的BDS二代卫星端PCO/PCV改正值进行了PPP定位精度评估，评估过程中选取了15个MGEX测站，设计4套方案分别处理了静态PPP和动态PPP。结果表明：①BDS 3类不同结构类型的卫星端PCV改正值在视线距离上引起的误差最大可达10 cm，必须加以改正；②当使用同一分析中心的精密产品和PCO/PCV改正值时，其坐标残差较小、收敛速度较快，收敛后N、E、U 3个方向的坐标定位精度较高；③当使用ESA的精密轨道和钟差进行PPP解算时，整体上的动态定位残差RMS最低，动态定位效果最好，相对于使用IGS的PCO/PCV，其在E、N、U方向提高率分别约为31%、20%和9%。本文对高精度动、静态导航和定位的参数模型选取具有一定的参考价值。
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| 关 键 词： | PCO/PCV BDS卫星 动态定位 静态定位 PPP |
| 收稿时间： | 2019-12-09 |
Analysis of the effect of antenna phase center correction on the precise positioning of BDS second-generation satellite |
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| WANG Na,DUAN Longfei,XU Weidong,WANG Zhiyi.Analysis of the effect of antenna phase center correction on the precise positioning of BDS second-generation satellite[J].Bulletin of Surveying and Mapping,2020,0(10):68-73. |
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| Authors: | WANG Na DUAN Longfei XU Weidong WANG Zhiyi |
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| Institution: | 1. China Geological Environment Monitoring, Beijing 100081, China;2. College of Geoscience and Surveying Engineering, China University of Mining&Technology, Beijing 100083, China;3. Beijing GeoBIM Geomatics Co., Ltd., Beijing 100085, China |
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| Abstract: | Accurate correction of the deviation of PCO/ PCV for the satellite end is an important prerequisite to realize the precise point positioning (PPP). In this paper, the evaluation of the BDS-Ⅱ PPP accuracy is conducted based on different PCO/ PCV correction value and precise orbit and clock of different IGS analysis center. In the process of evaluation, 15 MGEX stations are selected, and four sets of schemes are designed to deal with static PPP and dynamic PPP respectively. The results show that: ①the maximum error caused by the PCV in the line of sight for three different types of BDS satellite can reach 10 cm, which must be corrected. ②when the precision product and PCO/PCV correction value of the same analysis center are used, the coordinate residual error is small, the convergence speed is faster, and the convergent N, E, U is higher in three directions. ③When the precise orbit and the clock difference of the ESA are used for PPP solving, the dynamic positioning residual RMS on the whole is the lowest, and the dynamic positioning effect is preferable, and the rate of improvement in the E, N, U direction is about 31%, 20% and 9% relative to the use of IGS-based PCO/ PCV. This paper has certain reference value for the parameter model selection of high precision dynamic and static navigation and positioning. |
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| Keywords: | PCD/PCV BDS satellite dynamic positioning static positioning precise point positioning |
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