Performance Analysis of a Navigation System Combining BeiDou with LEO Communication Constellation

In recent years, LEO communication constellation shows a blowout development trend. The number of satellites in each constellation varies from tens to tens of thousands. If the general navigation payload is loaded on these satellites, the performance of the system will be greatly improved, and more accurate and reliable navigation and positioning services will be provided for the future mass high-precision users, intelligent driving, unmanned platform, and other users. Given this situation, based on analyzing the characteristics of the current LEO communication constellation, this paper proposes a navigation system architecture supported by combining BDS with LEO constellation. Through simulation analysis, the quantitative improvement of DOP (Dilution of Precision) and the positioning performance of the system is analyzed. The research results can provide a reference for the development of the PNT architecture and the next generation BeiDou system.