A precise positioning method for global navigation satellite system based on BDS/GPS fusion

Shenglong E; Lei Wang; Peng Dou; Hailin Xu; Junfei Jiang; Hao Wang

doi:10.1117/12.3007409

30 August 2023 A precise positioning method for global navigation satellite system based on BDS/GPS fusion

Shenglong E, Lei Wang, Peng Dou, Hailin Xu, Junfei Jiang, Hao Wang

Proceedings Volume 12797, Second International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023); 127972A (2023) https://doi.org/10.1117/12.3007409
Event: 2nd International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023), 2023, Qingdao, China

Abstract

To boost the precision positioning accuracy of the global navigation satellite system (GNSS) and effectively analyze the position information of GNSS, a precision positioning method based on BeiDou Navigation Satellite System/Global Positioning System (BDS/GPS) fusion is proposed. The proposed method utilizes a unified method for spatio-temporal references to adjust the time synchronization between the BDS and GPS, and a precise positioning mathematical model of GNSS based on BDS/GPS fusion is constructed in this paper. The tropospheric delay and ionospheric delay are corrected respectively through the Saastamoinen model and the ionosphere-free linear combination model, and the Earth’s rotation errors are corrected in the earth-fixed coordinate system. By employing Kalman filtering, the mathematical model problem of precise positioning is transformed into a linear problem, and the three-dimensional coordinate fixed solution of the model is solved to achieve precise positioning of the GNSS. The experimental results validate the high reliability of the proposed method for precision positioning. The root mean square (RMS) values in the east-west (E) direction, elevation (U) direction, and north-south (N) direction are 4.60 cm, 3.97 cm, and 13.77 cm, respectively, and the RMS value in three-dimensional positioning is 15.60 cm. It boasts a strong positioning ability and is available to increase the number of visible satellites. By appropriately adjusting the space satellite structure, it is possible to achieve further enhancements in precision positioning accuracy.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Shenglong E, Lei Wang, Peng Dou, Hailin Xu, Junfei Jiang, and Hao Wang "A precise positioning method for global navigation satellite system based on BDS/GPS fusion", Proc. SPIE 12797, Second International Conference on Geographic Information and Remote Sensing Technology (GIRST 2023), 127972A (30 August 2023); https://doi.org/10.1117/12.3007409

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KEYWORDS

Satellites

Satellite navigation systems

Global Positioning System

Receivers

Mathematical modeling

Covariance matrices

Navigation systems

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