Spike enable circuit

Details Spike enable circuit Spike enable circuit

1974-05-31

1976-03-09

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100LE, G01S 902

Patent

active

039435113

ABSTRACT:
The elimination of interfering radiation from received radar signals is generally accomplished by side-lobe suppression systems. Large clutter signals, however, can cause a side-lobe suppression system to become almost inoperable. In a high clutter environment the operation of a conventional side-lobe suppression system may also result in a high incidence of false alarms. In the present invention, pulse interference that arrives by way of the main antenna side-lobes that is smaller on the side-lobe suppression channel than the clutter signal appearing on the main radar channel is blanked prior to the implementation of a moving target indication (MTI) channel. A sharply rising interference pulse such as a spike occurring in the auxiliary channel may be detected by a fast time constant (FTC) circuit to provide a sidelobe blanking signal.

REFERENCES:
patent: 3032757 (1962-05-01), Majerus et al.
patent: 3704464 (1972-11-01), Drane, Jr. et al.
patent: 3860924 (1975-01-01), Evans

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