Electronic counter measures in radar
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United States of America Patent
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-
Sep 5, 2000
Grant Date -
N/A
app pub date -
Sep 15, 1977
filing date -
Sep 15, 1977
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus and method for eliminating an interference signal from a desired signal where a difference of polarization exists or can be made to exist. The desired signal is received on a first antenna of appropriate polarization and the interference signal is received via another port of the same antenna or a second antenna polarized ninety degrees away from the first. The signal received via the other polarization is adjusted for amplitude and phase so that all interference will be cancelled when both signals are subtracted in a summing junction. In the case where the interference and desired signals do not have polarization differences, provision is made to change the polarization of the desired signal.
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