Key Technical Characteristics and Performance of BeiDou Navigation Augmentation System Based on LEO Constellation

This paper studied a BeiDou navigation augmentation system architecture based on the LEO constellation and analyzed the key factors that affected the performance of the system. The paper also carried out four aspects of the system design and the performance quantification analysis, such as establishing and maintaining Spatio-temporal reference, constellation design, signal design, and user positioning calculation. The paper's research results can also be used to reference the design and construction of the new generation of the PNT system.