Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-11-06
1984-12-25
Buczinski, S. C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5PD, 343 77, 343 8, G01S 1300, G01S 1352, G01S 1358
Patent
active
044907184
ABSTRACT:
Improved non-cooperative radar apparatus locates and type-classifies an agitated, vibrating reflective target (e.g., a vehicle with its engine running)--whether the target is moving or stationary.
A homodyne-type receiver with a cooperating band pass filter extracts a reflected, frequency-shifted energy pattern which identifies the incidence of the agitated target. In accordance with further aspects of the instant invention, the particular energy distribution for the returned, reflected wave is then compared with a stored ensemble of such distributions, or target "signatures", to type-catagorize the target.
REFERENCES:
patent: 3181150 (1965-04-01), Ruppersburg et al.
patent: 3222673 (1965-12-01), Friedrich
patent: 3476483 (1969-11-01), Weeks
patent: 3512155 (1970-05-01), Bloice
patent: 3733603 (1973-05-01), Johnston
patent: 3882495 (1975-05-01), Bolger
Opitz Charles L.
Slobodin Leo
Buczinski S. C.
Judlowe Stephen B.
Lockheed Electronics Co., Inc.
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