Method of performing beam compression process on antenna pattern of radar
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United States of America Patent
Stats
-
Jan 16, 1996
Grant Date -
N/A
app pub date -
Aug 22, 1994
filing date -
Sep 13, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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