The BDS-3 basic system has already been established, starting to provide global service. As a new generation navigation ......

The classic Klobuchar model is widely used in navigation and positioning. However, the ionospheric delay correction accu......

Broadcast ephemeris accuracy is an important index of GNSS navigation system performance evaluation. As a component of b......

Navigation constellation inter-satellite link(ISL)is one of the efficient ways to improve the service performance of glo......

This paper evaluates the precision of iGMAS orbit and clock products,and analyzes their consistency.By the methods of or......