Research on mobile intelligent terminal using Beidou satellite positioning

The country attaches great importance to the industrial application of Beidou. Promoting the quality improvement of satellite positioning, especially Beidou Positioning in mobile intelligent terminals, is an urgent need to promote the high-quality development of Beidou industry. This paper aims to promote the large-scale application of Beidou. It mainly studies whether the mobile terminal actually uses Beidou satellite in the process of positioning and the participation of Beidou satellite in positioning in detail. It uses the laboratory GNSS test system to carry out the cold and hot start first positioning test and dynamic positioning test on eight mobile intelligent terminals. It determines the actual use of Beidou satellite in terminal positioning by analyzing the positioning log of the terminal. It calculates the position of the terminal and the position of the simulated satellite by the simulator to obtain the positioning error of the terminal. It tests and analyzes the positioning error from the aspects of satellite search, first positioning and tracking positioning. Finally, it summarizes and plans to improve the positioning performance of Beidou terminal and Beidou application in the future.