Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1974-06-28
1976-09-28
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
340258A, 343 5PD, 343 5SA, G01S 942, G08B 1322
Patent
active
039835588
ABSTRACT:
There is disclosed a radar system of the type employing a receiver capable f responding to a signal reflected from a moving target, which signal includes a doppler frequency component indicative of target motion. Included therewith are means for responding to an even harmonic component of said returned signal to provide an indication of the magnitude of the same, the magnitude of said even harmonic component indicative of the nature of said vehicle, as, for example, whether said vehicle is a tracked type (tank) or a wheeled type (automobile).
REFERENCES:
patent: 3098971 (1963-07-01), Richardson
patent: 3150363 (1964-09-01), Finvold
patent: 3181150 (1965-04-01), Ruppersberg et al.
patent: 3383678 (1968-05-01), Palmer
patent: 3431405 (1969-03-01), Dawson
patent: 3631489 (1971-12-01), Cooper
patent: 3636562 (1972-01-01), Wehner
patent: 3719945 (1973-03-01), Sletten et al.
patent: 3725917 (1973-04-01), Sletten et al.
Edelberg Nathan
Hubler Malcolm F.
Kanars Sheldon
The United States of America as represented by the Secretary of
Zelenka Michael
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