Hyperbolic navigation receiver

Details Hyperbolic navigation receiver Hyperbolic navigation receiver

1981-12-31

1985-01-29

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 130

Patent

active

044969511

ABSTRACT:
A hyperbolic navigation receiver locates ships, and the like, by phase-locking the output signal of the voltage-controlled oscillator or voltage-controlled phase shifter of respectively provided tracking loop filters corresponding to the incoming signals from a master and slave station. The voltage-controlled oscillator or voltage-controlled phase shifter is caused to produce an output signal which is a multiple frequency of the incoming signal. Phase discrimination of the output signals is undertaken without the use of a multiplier.

REFERENCES:
patent: 3117319 (1964-01-01), Stover
patent: 3214759 (1965-10-01), Mahoney
patent: 3725932 (1973-04-01), Hughes
patent: 3818477 (1974-06-01), Odans
patent: 3928852 (1975-10-01), Barker
patent: 3936828 (1976-02-01), Muess et al.
patent: 3983559 (1976-09-01), Honore et al.
patent: 3996515 (1976-12-01), Baltzer et al.
patent: 4114155 (1978-09-01), Raab

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