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:
Jul. 03, 2012
Filed:
Mar. 21, 2008
Ka C. Cheok, Waterford, MI (US);
Gert Edzko Smid, Oxford, MI (US);
Paul W. Fleck, Troy, MI (US);
Thomas P. Stiglich, Shelby Township, MI (US);
Ka C. Cheok, Waterford, MI (US);
Gert Edzko Smid, Oxford, MI (US);
Paul W. Fleck, Troy, MI (US);
Thomas P. Stiglich, Shelby Township, MI (US);
Nav-Track, Inc., Rochester, MI (US);
Abstract
The present invention relates to a navigation unit and base station used for determining location. A plurality of base stations are initialized to determine their location relative to each other. At the navigation unit, the time of arrival of at least one signal from each of the plurality of base stations is measured. From this, the location of the navigation unit relative to the plurality of base stations may be directly calculated using a closed solution. In one embodiment, a time of arrival technique is used and in another embodiment a time difference of arrival technique is used. Preferably an ultra-wide band frequency is utilized.