地理空间信息2025，Vol.23Issue(2)：15-19,5.DOI:10.3969/j.issn.1672-4623.2025.02.004
结合钟差解耦的GNSS精密单点定位
GNSS Precise Point Positioning Based on Clock Difference Decoupling
王剑 1王鹤 1侯育红2
作者信息
- 1. 浙江省工程物探勘察设计院有限公司,浙江 杭州 310005
- 2. 广州市城市规划勘测设计研究院有限公司,广东 广州 510060
- 折叠
摘要
Abstract
Aiming at the problems of high combined noise and few dynamic scenes in the ionospheric model of global navigation satellite system(GNSS),we proposed a precise point positioning model based on clock offset decoupling.At the user end of GNSS positioning system,we set the fixed satellite ambiguity as a random integer,selected the station with stable receiver clock offset,and set the three types of clock offset of receiver to zero,thus setting the ambiguity target to achieve clock offset decoupling of the GNSS precise point positioning system.For the GNSS po-sitioning information that had completed the clock offset decoupling processing,we used the Kalman filter algorithm to filter,and realized the posi-tion estimation through the prediction and update process.We used the reparameterization method to decouple the parameters of GNSS precise point positioning system,and constructed the precise point positioning model.The experimental results show that the model can achieve decoupling of GNSS phase clock and pseudo range clock,with positioning errors below 20 mm in different directions,and has high positioning accuracy.关键词
钟差解耦/GNSS/精密单点定位/卡尔曼滤波Key words
clock difference decoupling/GNSS/precise point positioning/Kalman filter分类
天文与地球科学引用本文复制引用
王剑,王鹤,侯育红..结合钟差解耦的GNSS精密单点定位[J].地理空间信息,2025,23(2):15-19,5.
