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:
Mar. 31, 2015
Filed:
Mar. 08, 2012
Qiyue Zhang, Cupertino, CA (US);
Darren S. Liccardo, San Jose, CA (US);
Anthony Malerich, Santa Clara, CA (US);
Qiyue Zhang, Cupertino, CA (US);
Darren S. Liccardo, San Jose, CA (US);
Anthony Malerich, Santa Clara, CA (US);
Moog, Inc., East Aurora, NY (US);
Abstract
A navigation system repeatedly determines a GNSS heading for the vehicle based on GNSS data received from the GNSS receiver, and repeatedly determines an inertial heading for the vehicle based on data received from an inertial measurement unit. The navigation system repeatedly sets the inertial heading to a verified GNSS heading and then provides the set inertial heading as input to a recursive feedback algorithm. The recursive feedback algorithm receives additional inputs indicating the vehicle's angular displacement or acceleration and outputs an updated inertial heading. The navigation system compares the subsequently determined GNSS headings with the updated inertial heading. If the two headings are different, the navigation system sets the GNSS heading to the updated inertial or 180 degree reverse of the GNSS heading.