Abstract
In order to evaluate the performance of GPS / BDS, RTKLIB, an open-source software of GNSS, is used in this paper. In this paper, the least square method, the weighted least square method and the extended Kalman filter method are respectively applied to BDS / GPS single system for data solution. Then, the BDS system and GPS system are used for fusion positioning and the positioning results of the two systems are compared with that of the single system. Through the comparison of experiments, on the premise of using the extended Kalman filter method for positioning, when the GPS signal is not good, BDS data is introduced for dual-mode positioning, the positioning error in e direction is reduced by 36.97%, the positioning error in U direction is reduced by 22.95%, and the spatial positioning error is reduced by 16.01%, which further reflects the advantages of dual-mode positioning in improving a system robustness and reducing the error.
Highlights
With the continuous development and improvement of GNSS technology, the research on related principles, equipment and data processing methods has gradually increased [1,2,3]
RTKLIB is an open source platform based on C language, which can be used for GNSS standard positioning and precise positioning
It can be concluded that the reliability of the dual system is better than that of the single system, highlighting the advantages of developing the joint positioning of multiple systems
Summary
With the continuous development and improvement of GNSS technology, the research on related principles, equipment and data processing methods has gradually increased [1,2,3]. In terms of navigation and positioning, if the receiver only uses a single GNSS system for navigation and positioning, its accuracy will certainly not be as high as that of the multi-mode receiver [7,8,9], and with the continuous promotion of the application scope of China's Beidou system, the research on the data processing method integrating Beidou and other satellite systems will gradually become a research hotspot [4,5,6,7]. In this paper, based on the RTKLIB package of GNSS, the single point positioning method is used to compare the performance of GPS single system, BDS single system, GPS and BDS double system and the bad environment, and further study the advantages of combining multiple satellite navigation system data, so as to provide some reference and inspiration for GNSS multi system joint positioning
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
