Global navigation satellite system (GNSS) anti-spoofing techniques
US11561307B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Jul 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for identifying spoofed navigation signals includes a multi-element antenna configured to receive a plurality of navigation signals. The system also includes at least one processor configured to determine an angle of arrival for each of the navigation signals and analyze the angles of arrival for the navigation signals to determine whether one or more of the navigation signals are spoofed. To analyze the angles of arrival for the navigation signals, the at least one processor may be configured to (i) determine whether two or more of the navigation signals were received at substantially the same angle of arrival (which may be based on a difference of less than 5° between the angles of arrival) and/or (ii) compare the angles of arrival for the navigation signals to at least one expected angle of arrival (which may be based on information about expected or actual positions of multiple satellites).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.