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:
May. 16, 2017
Filed:
Jun. 19, 2012
Applicants:
John J. Mason, Albuquerque, NM (US);
Louis Romero, Albuquerque, NM (US);
Inventors:
John J. Mason, Albuquerque, NM (US);
Louis Romero, Albuquerque, NM (US);
Assignee:
Sandia Corporation, Albuquerque, NM (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/02 (2006.01); G01S 3/48 (2006.01); G01S 5/04 (2006.01); G01S 5/02 (2010.01); G01S 3/32 (2006.01); G01S 3/22 (2006.01); G01S 5/12 (2006.01);
U.S. Cl.
CPC ...
G01S 3/48 (2013.01); G01S 5/0263 (2013.01); G01S 5/04 (2013.01); G01S 3/22 (2013.01); G01S 3/32 (2013.01); G01S 5/12 (2013.01);
Abstract
Geolocation is performed by receiving, at a plurality of non-earthbound platforms each moving in a known manner within a spatial coordinate system, a radio frequency (RF) signal transmitted from a transmitter at an unknown location on earth within the spatial coordinate system. For each of the platforms, a phase change of the received frequency carrier is measured over the same duration of time. The measured phase changes are combined to determine the transmitter location.