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:
Dec. 01, 2015
Filed:
May. 02, 2012
Mark Hsu, La Jolla, CA (US);
David Smith, Ellicott City, MD (US);
Jeremy Rode, San Diego, CA (US);
Anis Husain, San Diego, CA (US);
Maha Achour, Encinitas, CA (US);
Mark Hsu, La Jolla, CA (US);
David Smith, Ellicott City, MD (US);
Jeremy Rode, San Diego, CA (US);
Anis Husain, San Diego, CA (US);
Maha Achour, Encinitas, CA (US);
ZIVA CORPORATION, San Diego, CA (US);
Abstract
Methods, apparatus, and articles of manufacture make Geolocation of a source transmitter more difficult or impossible. Scatterers common to a source transmitter and an intended receiver are identified using a variety of techniques, such as iterative time reversal (ITR) and Singular Value Decomposition (SVD) of a scatter matrix. The source transmitter then uses time reversal and knowledge of the signatures of the scatterers to focus its transmissions on one or more of the scatterers, instead of the intended receiver. The source transmitter may have multiple antennas or antenna elements. The source transmitter and/or the intended receiver may include antenna elements with Near-Field Scatterers to enable spatial focusing below the diffraction limit at the frequencies of interest. The source transmitter may be a plurality of ad hoc nodes cooperating with each other.