Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1965-01-22
1976-06-29
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 77, G01S 942, G01S 946
Patent
active
039672840
ABSTRACT:
1. Radar apparatus comprising means for generating a series of pulses of oscillation, scanning aerial means for transmitting said pulses as a beam narrow in azimuth in different directions sequentially, the repetition frequency of said pulses being sufficiently high in relation to the angular velocity of the aerial means and the angle of the beam that a plurality of successive transmitted pulses impinge on a point target, a coherent receiver for reflected energy, means for storing returns derived from said receiver in response to a plurality of successive pulses of oscillation from said transmitting means, means for selecting returns corresponding to a predetermined range stored in said storing means, and means for examining selected returns to detect a cyclic component of substantially constant periodicity indicating the presence of a target at said predetermined range having a radial velocity relative to the apparatus represented by said periodicity.
REFERENCES:
patent: 3228028 (1966-01-01), Baum et al.
EMI Limited
Montone Gregory E.
Wilbur Maynard R.
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