GPS system for tracking an object of interest and method for...

Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite

Reexamination Certificate

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Reexamination Certificate

active

07855679

ABSTRACT:
An assisted global positioning system (AGPS) for tracking a movable object of interest is disclosed. The system comprises a service center for calculating a tag location, a plurality of ground base stations, a plurality of beacons adapted to transmit individual ID data, and at least one GPS-based smart tag releasably affixed to the movable object. The system components are interconnected by means of one or more communication links. The service center is adapted for inquiring the tag and receiving a response from the tag constituting pseudo-ranges according to a predetermined protocol.

REFERENCES:
patent: 6700533 (2004-03-01), Werb et al.
patent: 7633438 (2009-12-01), Tysowski
patent: 2008/0027599 (2008-01-01), Logan et al.

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