Cloud-based detection of gnss interference and alert to potential spoofing

A method of cloud processing for global navigation satellite system (GNSS) interference data from a plurality of GNSS receivers to alert aircraft personnel to GNSS spoofing of aircraft guidance systems, the method including:

• receiving at a cloud-based server, GNSS interference data from the plurality of GNSS receivers associated with one or more of:
• a certified avionics GNSS receiver onboard an aircraft,
• an external GNSS receiver, linked to an Electronic Flight Bag (EFB) tablet device or other software running on hardware, and independent of onboard certified avionics,
• cellular network base stations,
• automatic dependent surveillance-broadcast (ADS-B) networks, or
• dedicated GNSS monitoring facilities;
• the cloud-based server analyzing the GNSS interference data upon receipt, including one or more of:
• comparing a set of GNSS data for a particular aircraft to a plurality of operational limitations for the aircraft,
• comparing a first set of GNSS data to a second set of GNSS data, wherein the first and second sets of GNSS data are received from different GNSS receivers, onboard the same particular aircraft and operating independently of one another, or
• comparing a set of GNSS data for a first aircraft to a set of GNSS data for a second aircraft;
• identifying an interference event from the analyzed GNSS interference data, wherein the interference event is an anomalous flight path characteristic of an aircraft or an anomalous signal characteristic of a GNSS signal;
• and
• in response to an identified interference event, the cloud-based server providing an alert to EFB tablet devices or other software running on hardware onboard the aircraft thereby causing notification of aircraft personnel of a potential spoofing event.