Abstract
The BeiDou Satellite Navigation System of China can provide users with high precision, as well as all-weather and real-time positioning and navigation information. It can be widely used in many applications. However, new challenges appear with the expansion of the 5G communication system. To eradicate or weaken the influence of various errors in BeiDou positioning, a BeiDou satellite positioning algorithm based on GPRS technology is proposed. According to the principles of the BeiDou Satellite navigation system, the navigation and positioning data are obtained and useful information are extracted and sent to the communication network through the wireless module. The error is corrected by establishing a real-time kinematic (RTK) mathematical model, and the pseudorange is calculated by carrier phase to further eliminate the relativistic and multipath errors. Based on the results of error elimination, the BeiDou satellite positioning algorithm is improved and the positioning error is corrected. The experimental results show that the positioning accuracy and efficiency of the algorithm can meet the actual needs of real-time dynamic positioning systems.
Highlights
Introduction e BeiDou Satellite NavigationSystem (BSNS) is a selfdesigned global navigation satellite system of China [1]
To solve the problems of poor multipoint positioning effect, long positioning time, and low positioning accuracy existing in traditional methods, an improved BeiDou satellite positioning algorithm based on general packet radio system (GPRS) technology is proposed. e real-time kinematic (RTK) mathematical model is applied, and the pseudorange is calculated to further eliminate the relativistic and multipath errors
Ere is a certain error between the theoretical position of the satellite and the actual position in the actual situation, that is, the satellite orbit difference of the broadcast ephemeris. e BeiDou satellite is relatively stationary to Earth, and it is difficult to separate the satellite clock of the BeiDou satellite orbit determination clock during analysis
Summary
Pseudorange measurement equations containing unknowns; these unknowns are the user’s spatial coordinates and the time error of the receiving device. Erefore, by solving the pseudorange equation, the current user’s position and time difference can be obtained. E RTK mathematical model sends the carrier observations of the reference station to the user through the data link and calculates the difference with the user’s carrier phase observations to obtain the user’s position coordinates. If the receiver q continuously observes the satellite u, the distance calculated by multiple measurements will tend to change regularly; at this time, the true phase difference can be obtained to calculate the false. According to the above calculation process, it can be found that there are four unknowns in the three satellites, and the following equation for solving the position of the user machine is obtained: P(x, y, z). Using the new BeiDou satellite positioning improvement and error compensation method, the design and optimization of the BeiDou satellite positioning algorithm have been realized
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
