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:
May. 22, 2012
Filed:
Jul. 07, 2009
Russell P. Patera, Torrance, CA (US);
Russell P. Patera, Torrance, CA (US);
The Aerospace Corporation, El Segundo, CA (US);
Abstract
Computer-based systems and methods for determining attitude of a moveable object. Attitude is determined by a transformation matrix {right arrow over (U)} from a body coordinate frame of the moveable object to an inertial reference frame. The transformation matrix is determined by: (i) determining a slew rate vector, {right arrow over (α)}, for time tfor the moveable object that represents a change in direction of an angular rate vector, {right arrow over (ω)}, for the moveable object over the time interval from tto tin the body coordinate frame; (ii) determining an update to the transformation matrix for time tthat is based on a product of two matrices, the first matrix being related to a sum of {right arrow over (ω)} and {right arrow over (α)}, and the second matrix being related to −{right arrow over (α)}; and (iii) multiplying a transformation matrix for time tand the update to the transformation matrix for time tto obtain the transformation matrix for time t.