The GNSS operative monitoring equipment (GNOME): An SDR-based solution for integrity assurance

The GNSS operative monitoring equipment (GNOME) system is a distributed network of remote sentinels aimed at monitoring integrity, reliability and spoofing/interference-immunity of GNSS signals. The key features of this system directly come from the ICAO recommendations and standards which highly advise continuous control of the GNSS performance and integrity, both in the signal and in the navigation domains. The GNOME system design finds a key enabler in the software-defined radio signal-processing paradigm, which provides the necessary flexibility to perform all of the real-time analyses required to obtain the full picture of GNSS infrastructure status. In observance of ICAO recommendations, recording and playback capabilities for both instantaneous analysis reports and raw signal dumps is provided along with suitable playback and navigation tools which support quick localization of critical or abnormal events.