Communications: directive radio wave systems and devices (e.g. – Radar ew – Eccm
Patent
1977-07-07
1991-04-16
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Radar ew
Eccm
342 6, 342173, G01S 736, G01S 740
Patent
active
050086774
ABSTRACT:
A reflector of an antenna in a radar system subject to jamming carries a multiplicity of localized phase shifters which are sequentially controlled by a processor to introduce certain phase modifications into incoming signals reflected toward an associated radiator. The processor, operating on branched-off portions of the incoming signals, compares the magnitudes of the signals received in the several operational states of each phase shifter and maintains that operational state for which the signal level is at a minimum. The comparisons may be carried out on signals received at the end of a signal-transmission cycle, lacking a useful component.
REFERENCES:
patent: 3882503 (1975-05-01), Gamara
patent: 4070675 (1978-01-01), Daniel
Drabowitch Serge
Roger Joseph
Trigon Roland
"Thomson-CSF"
Dubno Herbert
Tarcza Thomas H.
Wallace Linda J.
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