Investigation of Narrowband Interference Filtering Algorithms for Galileo CBOC Signals

摘要

Global Navigation Satellite Systems (GNSS) systems share the same spectrum with other telecommunication systems. Papers based on actual RF measurement campaigns have reported that loss-of-lock on the navigational signals can happen to unaided GNSS receivers near radio and TV broadcast transmitters [5]. Radionavigation and communication systems can generate interference to GNSS receivers close to airports. Thus it is important to optimize the solutions against interferences. In this paper, we propose an innovative approach, because we address the particular issue of filtering the Continuous Wave Interferences (CWIs) affecting Multiplexed-Binary-Offset-Carrier (MBOC) Galileo navigation signal, using several filtering techniques. This comparative study is novel in the GNSS literature, to the best of the authors' knowledge.