GNSS spoofing threat detection and corrective action

A system comprising:

• at least one processor;
• a Global Navigation Satellite System (GNSS) spoofing detection module operatively coupled with the at least one processor, the GNSS spoofing detection module including instructions, executable by the at least one processor, to perform a method comprising:
• monitoring one or more satellite signals from one or more GNSS satellites with at least one GNSS receiver;
• collecting satellite orbital information from the at least one GNSS receiver over a preselected time period;
• storing the collected satellite orbital information in a memory;
• obtaining a current time and current orbital information values from the at least one GNSS receiver, wherein the current orbital information values comprise satellite orbital position, and dilution of precision including satellite geometry and number of satellites in view, and satellite IDs in the view, with respect to a current position of the at least one GNSS receiver;
• retrieving past orbital information values from the memory based on the collected satellite orbital information, the past orbital information values comprising satellite orbital position, and dilution of precision including satellite geometry and number of satellites in view, and satellite IDs in the view;
• calculating predicted orbital information values based on the past orbital information values, with respect to the current time from the at least one GNSS receiver, wherein the predicted orbital information values comprise predicted orbital position, and predicted dilution of precision including satellite geometry and number of satellites in view, and predicted satellite IDs in the view, with respect to the current position of the at least one GNSS receiver;
• comparing the predicted orbital position, and the predicted dilution of precision including satellite geometry and number of satellites in view, respectively, with a current orbital position, and a current dilution of precision including satellite geometry and number of satellites in view, to obtain respective discriminator values;
• determining whether the respective discriminator values are greater than respective threshold levels;
• determining whether the predicted satellite IDs in the view are different than those in live satellite signals;
• and outputting a spoofing alert signal when the respective discriminator values are greater than the respective threshold levels, or the predicted satellite IDs are different than those in the live satellite signal.

A system for detecting satellite signal spoofing, the system comprising:

• a plurality of satellite tracking stations, wherein the satellite tracking stations each have a respective reference receiver configured to receive and decode real-time satellite orbital information from a plurality of satellites;
• one or more vehicles each having a respective satellite receiver that is configured to receive and decode satellite orbital data from the satellites;
• a database and processing system in operative communication with the satellite tracking stations and the one or more vehicles, wherein the database and processing system comprises:
• a first orbital information database configured to store the real-time satellite orbital information received from the satellite tracking stations;
• a second orbital information database configured to store the satellite orbital data received from the one or more vehicles, wherein the satellite orbital data comprises satellite orbital position, and dilution of precision including satellite geometry and number of satellites in view, and satellite IDs in the view, with respect to a current position of the respective satellite receiver of the one or more vehicles;
• and
• a processing engine and alert system in operative communication with the first orbital information database and the second orbital information database, including determining whether predicted satellite IDs in the view are different than those in live satellite signals, wherein the processing engine and alert system hosts a spoofing detection algorithm that is operative to compare the satellite orbital information from the first orbital information database with the satellite orbital data from the second orbital information database, to determine if a satellite signal spoofing event is occurring, and to broadcast a spoofing alert when a spoofing event is detected.