The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 2023
Filed:
Jul. 01, 2020
Raytheon Systems Limited, Harlow, GB;
Steven Clark, Harlow, GB;
Raytheon Systems Limited, Harlow, GB;
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).