Station watch alarm system

Details Station watch alarm system Station watch alarm system

1979-03-26

1981-11-17

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 7ED, 343 73, 343112CA, G01S 1300, G01S 302

Patent

active

043014526

ABSTRACT:
A system which cooperates with a conventional radar system produces an alarm upon departure of a reference target from a predetermined area relative to a vessel as an indication of vessel drift from anchor or assigned station by the use of a variable range gate and a variable azimuth gate together with discriminating and timing or counting means.

REFERENCES:
patent: 3115622 (1963-12-01), Jaffe
patent: 3151322 (1964-09-01), Hildebrandt
patent: 3188631 (1965-06-01), Birtley
patent: 3648283 (1972-03-01), Busch et al.
patent: 3660846 (1972-05-01), Anderson
patent: 3732555 (1973-05-01), Strenglein
patent: 4107684 (1978-08-01), Watson, Jr.
patent: 4112419 (1978-09-01), Kinoshita et al.
patent: 4136338 (1979-01-01), Antenore

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