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. 18, 2010
Filed:
Aug. 19, 2005
Mark Alvin Schmidt, Charlotte, NC (US);
Kenneth Edward Hunt, Rock Hill, SC (US);
David Roy Holm, Oconomowoc, WI (US);
Scott Adam Stephens, Phoenix, AZ (US);
Mark Alvin Schmidt, Charlotte, NC (US);
Kenneth Edward Hunt, Rock Hill, SC (US);
David Roy Holm, Oconomowoc, WI (US);
Scott Adam Stephens, Phoenix, AZ (US);
Deere & Company, Moline, IL (US);
Abstract
A mobile transmitter transmits a transmission signal from a vehicle to beacons. An estimator determines elapsed times for corresponding propagation paths between the vehicle and the beacons. Each propagation path includes at least one of a first propagation duration of a transmission signal and a second propagation duration of a return signal. A compensator compensates for noise or measurement error associated with a corresponding propagation path by invoking a linear fit scheme. The linear fit scheme applies a generally linear fit over fixed intervals of noisy measurements such that the noisy position measurements generally conform to a linear portion of a path plan of a vehicle. A data processor estimates a position of a vehicle at a confluence or intersection of the position curves or temporal curves based on elapsed times for the propagation paths.