GPS-based automatic target reporting and finding network and com

Details GPS-based automatic target reporting and finding network and com GPS-based automatic target reporting and finding network and com

1994-05-02

1996-03-26

Tarcza, Thomas H.

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

Directive

Including a satellite

342352, 455 121, G01S 502

Patent

active

055024467

ABSTRACT:
A GPS emergency rescue network comprising at least one GPS receiver and L2-frequency transmitter combination for a target, and a GPS receiver able to tune the L2 frequency transmissions of the target's transceiver. A constellation of orbiting GPS satellites transmit their range information on two carrier frequencies, L1 and L2, and are differentiated from the survivor's L2-frequency transmissions by unique pseudo-random number codes in the spread spectrum code multiple access scheme that is otherwise conventional.

REFERENCES:
patent: 5119102 (1992-06-01), Barnard
patent: 5361212 (1994-11-01), Class et al.
patent: 5367306 (1994-11-01), Hollon et al.
patent: 5379045 (1995-01-01), Gilbert et al.
patent: 5414432 (1995-05-01), Penny, Jr. et al.

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