ASR system for microburst detection

Communications: radio wave antennas – Antennas – Wave guide type

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343853, H01Q 1300

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active

054914892

ABSTRACT:
A high gain antenna that produces a pencil beam along the ground and a lower gain antenna that produces a beam extending above the pencil beam are coupled to a source of r.f. pulses so that the amplitude of the r.f. pulses applied to the high gain antenna is less than the amplitude of the r.f. pulses applied to the lower gain antenna during airplane detection and the full amplitude of the r.f. pulses during a pulse segment is applied to the high gain antenna during wind pattern detection.

REFERENCES:
patent: Re33152 (1990-01-01), Atlas
patent: 2913723 (1959-11-01), Thourel
patent: 3801932 (1974-04-01), Goldie
patent: 4342997 (1982-08-01), Evans
patent: 4449128 (1984-05-01), Weir
patent: 4451832 (1984-05-01), Stites
patent: 4845507 (1989-07-01), Archer et al.
Patent Abstracts Of Japan vol. 6, 103(E-112)(981) 12 Jun. 1982 & JP-A-57 033 804 (Nippon).

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