Hybrid Tracking Loop Architectures for the Galileo E5 Signal

Due to their structure, Galileo E5 signals offer a number of ways to synchronise the signal and to demodulate the data. In this paper the authors describe the architectures required, and discuss the pros and cons of several of these methods, for tracking the E5 signal. It is shown that the trade-offs in tracking individual components of the E5 signal can be converted to advantages thereby improving the tracking jitter performance in low signal strength environments.