Radar apparatus for detecting an agitated reflective target

Details Radar apparatus for detecting an agitated reflective target Radar apparatus for detecting an agitated reflective target

1975-11-06

1987-02-03

Buczinski, S. C.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls external device

342 5, 342 73, 342104, G01S 1352

Patent

active

046411380

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-categorize 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

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