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

被引：0
|
作者：
Zhou F. [1 ]
Xu T. [2 ]
机构：
[1] College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao
[2] Institute of Space Science, Shandong University, Weihai
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2021年 / 50卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
GNSS bias; GPS/BDS/Galileo; Positioning performance; Precise point positioning; Triple-frequency observation;
D O I：
10.11947/j.AGCS.2021.20200146
中图分类号：
学科分类号：
摘要：
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. © 2021, Surveying and Mapping Press. All right reserved.
引用
收藏
页码：61 / 70
页数：9
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