Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-05-12
1978-10-03
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
G01S 730
Patent
active
041187032
ABSTRACT:
Pulse radar apparatus particularly for marine use has a dispersive antenna so that transmitted pulses sequentially of two or more different frequencies are radiated in different azimuthal directions. The antenna is continuously rotated and the receiver has separate channels for the different frequencies and display means correlating information received on different frequencies from the same azimuth thereby to reduce sea-clutter on the display.
REFERENCES:
patent: 3046547 (1962-06-01), Begovich
patent: 3266038 (1966-08-01), Milne et al.
Decca Limited
Goodwin Lawrence
Wilbur Maynard R.
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