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, 2009
Filed:
May. 31, 2006
Kenneth S. Morgan, St. Petersburg, FL (US);
I. Clay Thompson, Jr., Tampa, FL (US);
Kenneth S. Morgan, St. Petersburg, FL (US);
I. Clay Thompson, Jr., Tampa, FL (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method of aligning a gyro-compass comprising operating at least two Kalman filters in a set of Kalman filters to generate an error correction to at least a single navigation solution in a set of navigation solutions in order to provide coarse alignment azimuth convergence. The method further comprises selecting at least one selected Kalman filter from the set of Kalman filters and at least one selected navigation solution from the set of navigation solutions, and operating the at least one selected Kalman filter and the at least one selected navigation solution to provide fine alignment convergence to a correct azimuth. The selecting is based at least in part on the generated error correction, each navigation solution includes an azimuth different from the azimuth of each other navigation solution and each navigation solution azimuth is separated by no more than two times a small angle error assumption.