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:
Jan. 08, 2019
Filed:
Dec. 28, 2016
Flir Belgium Bvba, Meer, BE;
Mark Johnson, Vannes, FR;
Christopher Yeomans, Fareham, GB;
FLIR Belgium BVBA, Meer, BE;
Abstract
Techniques are disclosed for systems and methods to provide automatic and substantially continuous calibration for compasses mounted to moving structures. A compass calibration system may include a logic device configured to receive one or more sensor signals and determine a corrected magnetic field based, at least in part, on a measured local magnetic field. The logic device may be configured to receive the measured local magnetic field comprising a series of magnetic measurements associated with a mobile structure; determine a valid portion of a toroidal shape of the series of magnetic measurements that is available for further processing; and determine the corrected magnetic field based, at least in part, on calibration parameters derived from at least the valid portion of the toroidal shape.