Method of performing beam compression process on antenna pattern

Details Method of performing beam compression process on antenna pattern Method of performing beam compression process on antenna pattern

1994-08-22

1996-01-16

Tarcza, Thomas H.

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

Directive

Utilizing correlation techniques

342382, G01S 316

Patent

active

054851629

ABSTRACT:
An antenna system comprising two similar antennas with a monopulse feed system is scanned while transmitting in-phase radio waves from the two antennas. Reflected radio waves are received by the two antennas and fed to a hybrid circuit which in turn produces a sum signal .SIGMA. and a difference signal .increment.. After detection is performed by a detector, a signal processing unit performs double differential processing on the sum signal .SIGMA. and the differential signal .increment.. In this processing step, the sum signal is output only if the double differential coefficient of said sum signal is equal to or less than a predefined positive real number value and if the double differential coefficient of said difference signal is equal to or greater than a predefined negative real number value, and a zero signal is output in any other cases. Thus, the beam width of an antenna pattern is compressed without missing a necessary output signal.

REFERENCES:
patent: 4010469 (1977-03-01), Marcum
patent: 5296864 (1994-03-01), Sezai

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