Radar apparatus for detecting and/or classifying an agitated ref

Details Radar apparatus for detecting and/or classifying an agitated ref Radar apparatus for detecting and/or classifying an agitated ref

1975-11-06

1984-11-20

Buczinski, S. C.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 5PD, 343 6R, 343 7A, 343 77, 343 8, G01S 1300, G01S 1352, G01S 1358

Patent

active

044841930

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 receiver with a cooperating band pass filter extracts a reflected, frequency-shifted energy pattern from a frequency limited band exceeding the Doppler-shifted emitted interrogation wave to identify 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: 3176294 (1965-03-01), Merlo et al.
patent: 3181150 (1965-04-01), Ruppersberg et al.
patent: 3512155 (1970-05-01), Bloice
patent: 3733603 (1973-05-01), Johnston
patent: 3772696 (1973-11-01), Kummer
patent: 3882495 (1975-05-01), Bolger

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