Galileo Sensor Station Ground Reference Receiver Performance Characteristics

The Galileo Ground Segment design includes a global network of Galileo Sensor Stations (GSS) to be used for orbit determination, time synchronization, and integrity determination. NovAtel, under contract to ESA, is developing the requirements for the high quality Ground Reference Receivers to be used in the GSS. During the design process NovAtel is leveraging their experience as the world’s leading supplier of Ground Reference Receivers to satellite augmentation systems in the USA, Europe, Japan and China. The first step in this design process is the development of receiver requirements together with the confidence that these requirements can be met. The Binary Offset Carrier (BOC), multiplexed codes, multiple carrier frequencies, potential use of digital pulse blanking, and new high rate spreading codes make the design of a Galileo Reference Receiver challenging. To meet this challenge NovAtel is developing an A/D sample level software simulation of a Ground Reference Receiver to verify performance characteristics during the requirements definition phase. The critical performance characteristics of the Galileo Reference Receiver will be reviewed. The anticipated tracking, multipath mitigation and interference rejection performance of the Galileo Reference Receiver will be discussed. An overview of the A/D sample level software simulator will be presented. Test results from the simulator will be presented showing the predicted code and carrier tracking performance of the receiver.