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, 2011
Filed:
Jun. 27, 2008
Jau-hsiung Wang, Aurora, CA;
Jau-Hsiung Wang, Aurora, CA;
Applanix Corporation Inc., Richmond Hills, Ontario, CA;
Abstract
Two methods for determining a best initial heading estimate for use in an AINS system, while recording position data values and in-motion data values, assigning incremental changes to indexed heading ψ, calculating a set of time indexed present AINS position values and a corresponding set of time indexed absolute horizontal position measurement residual values, recording the absolute maximum time indexed horizontal position measurement residual and the corresponding value of ψreturning to the step of assigning an incremental increase to a next value to indexed heading ψup to 360 degrees, identifying the maximum time indexed horizontal position measurement residual and corresponding ψ, followed by identifying the ψhaving the smallest absolute maximum horizontal position measurement residual as ASecond method uses a circular array of AINS ENGINES each with a different ψrunning in parallel and finding smallest horizontal position measurement residual for A.