Two-stage location system

Details Two-stage location system Two-stage location system

2008-06-03

2008-06-03

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

C342S357490

Reexamination Certificate

active

07382317

ABSTRACT:
Systems and methods are provided for two-stage location. In one implementation, there is provided a method for receiving a first location of a first radio, the first radio providing the first location of the first radio; using the received first location to determine when to transmit an activation command from a portable locator to a second radio, the second radio coupled to the first radio; and receiving at the portable locator a beacon transmitted to enable the portable locator to precisely locate the second radio and the coupled first radio.

REFERENCES:
patent: 5485163 (1996-01-01), Singer et al.
patent: 5554993 (1996-09-01), Brickell
patent: 5914675 (1999-06-01), Tognazzini
patent: 6480147 (2002-11-01), Durst et al.
patent: 7039358 (2006-05-01), Shellhammer et al.
patent: 2003/0040272 (2003-02-01), Lelievre et al.

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