Integrated radio direction finding and GPS receiver tracking sys

Details Integrated radio direction finding and GPS receiver tracking sys Integrated radio direction finding and GPS receiver tracking sys

1998-04-13

2000-07-25

Blum, Theodore M.

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

Directive

Including a satellite

34235709, 342457, 701213, H04B 7185, G01S 502

Patent

active

060941642

ABSTRACT:
An integrated radio direction finding and GPS receiver tracking system. In one embodiment, a transmitter device is attached to an object to be located. The transmitter device transmits a signal. The transmitted signal is received by a portable, user-totable tracking unit. The portable, user-totable tracking unit uses the received signal to determine at least the bearing of the object from the portable, user-totable tracking unit. A position generating system is coupled to the portable, user-totable tracking unit to generate the position information of the portable, user-totable tracking unit. The bearing of the object from the portable, user-totable tracking unit and the position information of the portable, user-totable tracking unit is transmitted from the portable, user-totable tracking unit to a base station. The base station processes the bearing of the transmitter device from the portable, user-totable tracking unit and the position information of the portable, user-totable tracking unit to provide information to be employed during the location of the object.

REFERENCES:
patent: 4908629 (1990-03-01), Apsell et al.
patent: 5021794 (1991-06-01), Lawrence
patent: 5497149 (1996-03-01), Fast
patent: 5621417 (1997-04-01), Hassan et al.
patent: 5652570 (1997-07-01), Lepkofker

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