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:
Sep. 13, 2022
Filed:
Dec. 10, 2018
Applicant:
California Institute of Technology, Pasadena, CA (US);
Inventor:
Darmindra D. Arumugam, Pasadena, CA (US);
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01); G01B 7/30 (2006.01); G01P 3/50 (2006.01); G01P 3/44 (2006.01); G01S 5/02 (2010.01); G01C 21/16 (2006.01); G01S 5/12 (2006.01); G01P 15/105 (2006.01);
U.S. Cl.
CPC ...
G01B 7/14 (2013.01); G01B 7/30 (2013.01); G01C 21/165 (2013.01); G01P 3/44 (2013.01); G01P 3/50 (2013.01); G01S 5/0205 (2013.01); G01S 5/0247 (2013.01); G01S 5/12 (2013.01); G01P 15/105 (2013.01);
Abstract
Range and orientation of a transmitter and a receiver are found by detecting the magnetoquasistatic field couplings between coils at the transmitter and receiver. Sum functions and ratio functions are calculated for each of the unique magnetoquasistatic field couplings between the transmitter and the receiver. The sum and ratio functions are inverted to determine the drift-free range and orientation. Linear and angular velocity and acceleration are calculated by applying a filter to reduce noise, and then taking the corresponding derivatives.