Electronic counter measure system utilizing a digital RF memory

Details Electronic counter measure system utilizing a digital RF memory Electronic counter measure system utilizing a digital RF memory

1985-08-16

1988-05-10

Tubbesing, T. H.

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

Radar ew

Ecm

342 15, G01S 738

Patent

active

047439050

ABSTRACT:
An active radar jamming system using a digital radio frequency memory (DRFM) as the central subsystem in the generation and detection of specific signal characteristics. Associated systems control the operation, data processing, and loading of the DRFM. Signals generated by the jamming system are either repeated replicas of the received radar signal stored in the DRFM, or newly generated signals constructed from data loaded into the DRFM by the associated subsystems. Such associated subsystems generate appropriate data for providing carrier and noise RF signals. Systems are also provided for determining the presence of phase coding and chirp modulation in the received radar signal data contained in the DRFM, and for detecting the angle-of-arrival of the radar signal.

REFERENCES:
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patent: 3947827 (1976-03-01), Dautremont, Jr. et al.
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patent: 4217580 (1980-08-01), Lowenschuss
Frank J. Calandra, "EW Systems Applies Deceptive Countermeasures", Jan. 1979, Microwaves, vol. 18, No. 1, p. 91.

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