Back to results
US 10,948,602 B1Granted
Global navigation satellite system spoofer identification technique
AssigneeInterstate Electronics Corporation
InventorsSteven B. Alexander, Gilberto Isaac Sada
Life of this patent
Estimating the term…
Abstract
Disclosed is a technique that can provide one or more countermeasures against spoofers. A direction from which a spoofing attack occurs is identified. A beamformer can control an antenna pattern of a CRPA to null out signals from that direction, which can assist a GNSS receiver to avoid error induced by the spoofing attack. Further, after two or more observations, the location of the spoofer can be identified.
Claims29
An apparatus comprising:
- a beamformer configured to beam steer a main lobe of an antenna pattern of a controlled reception pattern antenna (CRPA);
- a global navigation satellite system (GNSS) receiver comprising a processor, the GNSS receiver configured:
- to cause the beamformer to generate and steer the main lobe of the CRPA to survey a plurality of directions in space;
- to determine that a spoofer exists along a particular beam direction in the surveyed space when signals appearing to be associated with two or more space vehicles of a global navigation satellite system are higher in signal power along the particular beam direction relative to other directions;
- and
- to cause the beamformer to generate and steer a null along the particular beam direction to suppress signals emanating from the spoofer.
3 more elements
An electronically-implemented method, the method comprising:
- beam steering, by a beamformer of a global navigation satellite system (GNSS) receiver, a main lobe of a survey antenna pattern of a controlled reception pattern antenna (CRPA) connected to the GNSS receiver to survey a plurality of directions in space;
- determining, by the GNSS receiver, that a spoofer exists along a particular beam direction in the surveyed space when signals appearing to be associated with two or more space vehicles of a global navigation satellite system are higher in signal power along the particular beam direction relative to other directions;
- and
- suppressing interfering signals from the spoofer by at least steering, by a beamformer of the GNSS receiver, a null of an antenna pattern along the particular beam direction.
1 more element
Dependencies are inferred from the claim text.