Semi-automatic direction finding set

Details Semi-automatic direction finding set Semi-automatic direction finding set

1989-12-05

1991-01-08

Barron, Jr., Gilberto

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

Directive

Beacon or receiver

342430, G01S 314, G01S 706

Patent

active

049839837

ABSTRACT:
A receiver selects and amplitude demodulates an RF signal from one of a pality of directional antennas. The demodulated signal is then delayed to put it in time synchronism with the same signal information from an omnidirectional antenna. A signal is then generated of the peak pulses of the demodulated signal when the pulses are in time synchronism with pulses from the omnidirectional antenna. A control indicator receives the peak pulses along with periscope bearing signals and ship's heading signals and gives an r,.THETA. display of the amplitude of the RF signal selected from the directional antenna at the periscope true bearing angle.

REFERENCES:
patent: 3440656 (1969-04-01), Wong et al.
patent: 3747107 (1973-07-01), Poppe et al.

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