Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1974-06-24
1976-07-20
Tubbesing, T.H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5EM, 343 73, 343112CA, G01S 902
Patent
active
039710181
ABSTRACT:
The invention is a radar harbor surveillance sensor, computer, and display system for providing a graphic display of vessels negotiating confined navigation channels and permitting rapid and accurate assessment of the degree of hazard or safety in the movements of the monitored vessels.
REFERENCES:
patent: 3188631 (1965-06-01), Birtley
patent: 3383677 (1968-05-01), Baum et al.
patent: 3717873 (1973-02-01), Riggs
patent: 3725918 (1973-04-01), Fleischer et al.
patent: 3890616 (1975-06-01), Kojima et al.
Isbister Eric J.
O'Sullivan James P.
Sperry Rand Corporation
Terry Howard P.
Tubbesing T.H.
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