Method of inferring sensor attitude through multi-feature tracking
June 7, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTracking and/or guidance systems Dual mode guidance system Satellite camera image navigation Star sightings by satellite for image navigation System for computing the self-motion of moving images devices Apparatus for guiding a missile Guiding an unmanned vehicle by reference to overhead features Surveying satellite apparatus Patent #: 5204818 InventorsAssigneeApplicationNo. 487204 filed on 06/07/1995US Classes:382/103, Target tracking or detecting382/278, Correlation701/222Using star trackerExaminersPrimary: Boudreau, Leo H.Assistant: Kelley, Chris Attorney, Agent or FirmInternational ClassG06K 009/20AbstractA method for inferring precise sensor attitude information in a tracking sensor system begins with storing at a first time a reference image in a memory associated with tracking sensor. Next, the method includes sensing at a second time a second image. The sensed image comprises a plurality of sensed feature locations. The method further includes determining the position of the tracking sensor at the second time relative to its position at the first time and then forming a correlation between the sensed feature locations and the predetermined feature locations as a function of the relative position. The method results in an estimation of a tracking sensor pose that is calculated as a function of the correlation. Because the method is primarily computational, implementation requires no new hardware in a tracking sensor system other than that which may be required to provide additional computational capacity.Other References
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