Radio position-determining system

Details Radio position-determining system Radio position-determining system

1976-06-23

1978-08-08

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343103, G01S 130

Patent

active

041060229

ABSTRACT:
A relay system for relaying hyperbolic navigation signal information received at a mobile. The mobile has a simple relay transmitter and receives signals which are radiated from different navigation transmitters in turn on a single frequency f.sub.rf. The received signals are heterodyned to a single audio frequency f by mixing with a locally-generated or transmitted signal f.sub.o. Phase errors are minimized by transmitting the information as phase changes of the single frequency f signal in a single transmission channel.

REFERENCES:
patent: 3471856 (1969-10-01), Laughlin, Jr. et al.
patent: 3493970 (1970-03-01), Knauth
patent: 3711856 (1973-01-01), Adrian et al.
patent: 3715757 (1973-02-01), Toman
patent: 3774215 (1973-11-01), Reed

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