GNSS Autonomous Navigation System's Simulation System

Autonomous navigation is one of the key technologies in GNSS, which means each GNSS satellites can determine its navigation message based on crosslink measurement, crosslink communication and uploaded reference navigation message. The autonomous navigation system of GNSS is an application of pervasive computing in complex engineering project. A simulation system of GNSS autonomous navigation system has been built, which is a tool for debugging and development of the autonomous navigation system. Simulation architectures of crosslink measurement, navigation message estimation are described.