Navigation system using re-transmitted GPS

Details Navigation system using re-transmitted GPS Navigation system using re-transmitted GPS

1993-09-24

1995-08-01

Blum, Theodore M.

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

Directive

Including a satellite

342453, 342353, G81S 502, H04B 7185

Patent

active

054383374

ABSTRACT:
A system for measuring the relative positions of first and second units includes a re-transmitting apparatus at the first unit and a receiver at the second unit capable of making simultaneous real-time comparisons of phase and frequency information contained in first signals received directly from the satellites by the second unit and second signals received from the satellites by the first unit and immediately retransmitted to the second unit in their entirety without processing before retransmission.

REFERENCES:
patent: 4918609 (1990-04-01), Yamawaki
patent: 5099245 (1992-03-01), Sagey
patent: 5119102 (1992-06-01), Barnard
patent: 5202829 (1993-04-01), Geier
patent: 5252982 (1993-10-01), Frei
patent: 5261118 (1993-11-01), Vanderspool, II et al.
patent: 5361212 (1994-11-01), Class et al.

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