测绘科学技术学报2025，Vol.41Issue(3)：245-251,7.DOI:10.3969/j.issn.1673-6338.2025.03.004
一种顾及频点间偏差的多频伪距融合实时SPP
A Multi Frequency Pseudo-range Fusion Realtime SPP Considering Inter Frequency Bias
王献中 1温丽芳 1李丽媛 1曾相航1
作者信息
- 1. 和芯星通科技(北京)有限公司,北京 100094
- 折叠
摘要
Abstract
The pseudo-range at different frequency cannot be mixed directly due to the inter frequency pseudo-range bias(IFPB).In scenarios where the GNNS signal is poor,the multi frequency pseudo-ranges cannot be fully uti-lized resulting in the positioning performance degradation.In this paper,a multi frequency pseudo-range fusion po-sitioning method considering IFPB is proposed.Firstly,the IFPB parameters of the model are estimated by filtering when the GNSS signal is good,and the pseudo-range of the other frequency is compensated with the calculated IF-PB value when the GNSS singnal is poor,then the optimal pseudo-range can be obtained by fusing the multiple fre-quency pseudo-ranges of each satellite.The optimal pseudo-ranges are further used for position calculation.The ex-periment results show that the method proposed in this paper can effectively improve the position accuracy at static and dynamic scenarios.At dynamic urban canyon scenarios,compared with the positioning results using BDS/GPS/GLONASS/GALILEO(CGRE)four GNSS system the raw pseudo-range,the position peak errors at horizon-tal,vertical and three-dimensional can decrease about 74.6%,18.6%and 29.8%respectively,RMS value de-crease about 21.9%,20.9%and 21.3%respectively,and STD value decrease about 31.9%,23.6%and 37.4%re-spectively.关键词
全球导航卫星系统/频间伪距偏差/多频伪距融合/伪距定位/定位精度Key words
GNSS/inter-frequency pseudo-range bias/multi-frequency pseudo-range combination/pseudo-range positioning/positioning accuracy分类
天文与地球科学引用本文复制引用
王献中,温丽芳,李丽媛,曾相航..一种顾及频点间偏差的多频伪距融合实时SPP[J].测绘科学技术学报,2025,41(3):245-251,7.
