Automatic direction finder

Details Automatic direction finder Automatic direction finder

1981-10-26

1984-12-04

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343443, G01S 502

Patent

active

044867573

ABSTRACT:
This is an automatic direction finder comprising a separately located first and second sensor means for receiving a first and second representation signal from a remote electromagnetic signal source, an error correction loop means connected to the first and second sensor means for nulling the second representation signal in the second sensor means, and an indicator means responsive to the error correction loop means for computing and displaying an off-boresight direction of the electromagnetic signal when the second representation signal is substantially nulled at the second sensor means.

REFERENCES:
patent: 3369235 (1968-02-01), Odams et al.
patent: 4103304 (1978-07-01), Burnham et al.
patent: 4219821 (1980-08-01), Selim
patent: 4275397 (1981-06-01), Gutleber

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