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. 04, 2006
Filed:
May. 23, 2003
Gregory L. Duckworth, Belmont, MA (US);
Gregory L. Duckworth, Belmont, MA (US);
Verizon Corporate Services Group Inc., New York, NY (US);
Abstract
Systems and methods for localizing the position of a wireless device using a plurality of coordinated highly directional or adaptive antennas to detect signals from the wireless device. Because of the directional nature and/or adaptive processing of the antennas, off-angle multipath signals resulting from reflection and scattering as the wireless signal propagates through a cluttered environment are rejected by the antennas and processing. As a result, the antennas pass primarily direct path signals from the wireless device to the location estimator. The time of arrival of the signal and the angle of arrival at each antenna are used to in the location estimator to calculate the position of the wireless device. Various robust inversion techniques may also be applied to the data to minimize the effect of residual multipath-corrupted detections. Furthermore, the systems and methods include specialized wireless devices that provide locating signals and signals related to the biological condition of their owner.