GPS/BDS/Galileo三频精密单点定位模型及性能分析

doi:10.11947/j.AGCS.2021.20200146

测绘学报 ›› 2021, Vol. 50 ›› Issue (1): 61-70.doi: 10.11947/j.AGCS.2021.20200146

GPS/BDS/Galileo三频精密单点定位模型及性能分析

周锋¹, 徐天河²

1. 山东科技大学测绘科学与工程学院, 山东青岛 266590;
2. 山东大学空间科学研究院, 山东威海 264209

收稿日期:2020-04-21 修回日期:2020-11-13 发布日期:2021-01-15
通讯作者: 徐天河 E-mail:thxu@sdu.edu.cn
作者简介:周锋(1985-),男,博士,讲师,研究方向为多源传感器(GNSS/INS/SLAM/LiDAR)融合导航定位。E-mail:zhouforme@163.com
基金资助:
国家自然科学基金（41904027；41904011）；中国博士后科学基金（2020M673669）；大地测量与地球动力学国家重点实验室开放研究基金（SKLGED2020-3-2-E）；山东省自然科学基金（ZR2019QD003）

Modeling and assessment of GPS/BDS/Galileo triple-frequency precise point positioning

ZHOU Feng¹, XU Tianhe²

1. College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China;
2. Institute of Space Science, Shandong University, Weihai 264209, China

Received:2020-04-21 Revised:2020-11-13 Published:2021-01-15
Supported by:
The National Natural Science Foundation of China (Nos. 41904027;41904011);China Postdoctoral Science Foundation (No. 2020M673669);The Foundation of State Key Laboratory of Geodesy and Earth’s Dynamics (No. SKLGED2020-3-2-E);The National Natural Science Foundation of Shandong Province of China (No. ZR2019QD003)

摘要/Abstract

摘要： 在精细考虑伪距和载波相位硬件偏差时变特性的基础上，导出了更为严谨的非差非组合观测方程，并给出了非组合模式下两类GNSS偏差的数学表达形式。基于此，本文详细研究了3种常用的三频精密单点定位（PPP），即无电离层两两组合IF1213、单个无电离层组合IF123与非组合UC123函数模型的独立参数化方法，系统分析了3种PPP模型的相互关系以及GPS/BDS/Galileo三频静、动态PPP定位性能。结果表明，静态PPP收敛后定位精度水平方向优于1.0 cm，高程优于1.5 cm；动态PPP水平方向优于2.0 cm，高程优于5.0 cm；三频PPP的定位性能与双频PPP基本相当。

关键词: GPS/BDS/Galileo, 精密单点定位, GNSS偏差, 三频观测值, 定位性能

Abstract: With careful consideration of time-varying characteristics of pseudorange and carrier phase hardware biases, more rigorous undifferenced and uncombined observation equations are derived, and the mathematical expressions of the two types of GNSS biases in uncombined mode are given. Based on this, this contribution studied independent parameterization methods of three commonly used triple-frequency precise point positioning (PPP) (i.e., ionosphere-free combination IF1213 and IF123 as well as uncombination UC123) function models in detail, and systematically analyzed the relationship among these models. Subsequently, the positioning performance in terms of positioning accuracy for GPS/BDS/Galileo triple-frequency PPP in static and kinematic modes was assessed. The experimental results showed that the positioning accuracy after convergence for static PPP was better than 1.0 and 1.5 cm; while that for kinematic PPP was better than 2.0 and 5.0 cm in horizontal and vertical components, respectively. Moreover, the positioning performance of triple-frequency and dual-frequency PPP was comparable.

Key words: GPS/BDS/Galileo, precise point positioning, GNSS bias, triple-frequency observation, positioning performance

中图分类号:

P228

周锋, 徐天河. GPS/BDS/Galileo三频精密单点定位模型及性能分析[J]. 测绘学报, 2021, 50(1): 61-70.

ZHOU Feng, XU Tianhe. Modeling and assessment of GPS/BDS/Galileo triple-frequency precise point positioning[J]. Acta Geodaetica et Cartographica Sinica, 2021, 50(1): 61-70.

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GPS/BDS/Galileo三频精密单点定位模型及性能分析

Modeling and assessment of GPS/BDS/Galileo triple-frequency precise point positioning

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