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. 17, 2020
Filed:
Dec. 22, 2014
Applicant:
Massachusetts Institute of Technology, Cambridge, MA (US);
Inventors:
Swarun Suresh Kumar, Cambridge, MA (US);
Dina Katabi, Cambridge, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/14 (2006.01); G01S 3/46 (2006.01); G01S 3/48 (2006.01); G01S 3/52 (2006.01); G01S 13/48 (2006.01); G01S 5/02 (2010.01); G01S 19/24 (2010.01); G01S 19/14 (2010.01); G01S 13/90 (2006.01); G01S 3/72 (2006.01); H04L 27/26 (2006.01); G01S 3/04 (2006.01); H04W 64/00 (2009.01);
U.S. Cl.
CPC ...
G01S 3/14 (2013.01); G01S 3/46 (2013.01); G01S 3/48 (2013.01); G01S 3/52 (2013.01); G01S 5/0273 (2013.01); G01S 13/48 (2013.01); G01S 3/04 (2013.01); G01S 3/72 (2013.01); G01S 13/9023 (2013.01); G01S 13/9082 (2019.05); G01S 19/14 (2013.01); G01S 19/24 (2013.01); H04L 27/2601 (2013.01); H04W 64/00 (2013.01);
Abstract
Multiple radio transmissions are processed to determine, for each of a number of directions of arrival of the radio transmissions, a most direct direction of arrival, for example, to distinguish a direct path from a reflected path from the target. In some examples, the radio transmissions include multiple frequency components, and channel characteristics at different frequencies are compared to determine the direct path.