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:
Nov. 25, 2025
Filed:
Aug. 20, 2020
Applicant:
Bae Systems Plc, London, GB;
Inventors:
Mark Edgar Bray, Chelmsford, GB;
Jason John Lepley, Chelmsford, GB;
Assignee:
BAE SYSTEMS PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 17/08 (2006.01); G01H 9/00 (2006.01); G01S 17/50 (2006.01); H01H 9/00 (2006.01); H04N 23/56 (2023.01); H04N 23/957 (2023.01);
U.S. Cl.
CPC ...
G01S 17/50 (2013.01); G01H 9/00 (2013.01); G01S 17/08 (2013.01); H04N 23/56 (2023.01); H04N 23/957 (2023.01);
Abstract
Methods and apparatus for detecting a modulating element of an object in a scene are described in which an element in a scene is illuminated with a modulated light source. A signal is obtained from an optical detector based on light received from the illuminated element. An intermediate frequency signal is detected from the signal obtained from the optical detector, the intermediate frequency signal being related to a frequency of the modulated light source and a frequency of modulation of the element within the scene. The modulating element is detected based on the intermediate frequency signal.