Harbor radio navigation system

Details Harbor radio navigation system Harbor radio navigation system

1975-03-31

1978-01-31

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 64, 325116, G01S 502

Patent

active

040718450

ABSTRACT:
A radio beacon navigation system wherein buoys placed at predetermined locations in a harbor or channel transmit identification signals. Every buoy is assigned a unique carrier frequency upon which is transmitted a signal capable of identifying the buoy. Each buoy is shown on harbor charts according to the unique properties of its signal. Radio receiving means carried aboard vessels navigating through the harbor or channel include means for determining the identity of the buoy from which signals are received and the direction from which the received signals emanate.

REFERENCES:
patent: 2159159 (1939-05-01), Horle
patent: 2471412 (1949-05-01), Clark
patent: 3366958 (1968-01-01), Seaborn
patent: 3378817 (1968-04-01), Vitt
patent: 3510777 (1970-05-01), Gordon
patent: 3628150 (1971-12-01), Ditthardt
patent: 3689842 (1972-09-01), Meed
patent: 3816832 (1974-06-01), Elwood
patent: 3835387 (1974-09-01), Rooks et al.
Keen, Wireless Direction Finding, 3rd Edition (1938), Iliffe & Sons Ltd., London, pp. 465-467.

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