This activity proposes to study optimisation of the receiver processing architecture via tighter integration between the navigation and the signal processing, and exploitation of large amount of redundant information available with multiple constellation, frequency, signals, in order to improve in general acquisition and tracking performance, robustness against hostile RF environment etc.. The activity also includes the design and prototyping of a channel monitor for multipath estimation and mitigation in GNSS receivers.

New architecture/design of the receiver processing chain can contribute in improving the performance. Recent increases in the computational power of computers and digital signal processors have made possible novel signal tracking techniques in GNSS receivers, so that both the Signal processing and the Navigation processing can be optimised or even combined in to one single estimation algorithm. Such techniques as Direct Correlators Output Processing (DCOP) or Vector Delay Lock Loop, channel estimators replace individual traditional tracking loops with a single Kalman Filter, which jointly processes the received signals while exploiting their correlated noises. Potential benefits of these new tracking techniques include an order-of-magnitude improvement in positional accuracy in environments of jamming and high dynamics. More over exploitation of the signal, frequency constellation diversity can also be a means to achieve higher performance.