Communications: directive radio wave systems and devices (e.g. – Clutter elimination
Patent
1998-02-24
1999-09-21
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
342 70, 342 89, 342109, 342112, G01S 7292
Patent
active
059559853
ABSTRACT:
Disclosed is a device for the reduction of noise in a radar receiver. The noise to be reduced being governed by a 1/F.sup.k relationship and the radar carrying out an encoding of the transmission in at least two frequencies, the device comprises at least the following means: firstly, means for routing the signals received to at least two channels so that, when a target is illuminated by a transmission at the first code frequency (F.sub.1), the corresponding received signal (S.sub.1) is sampled and routed to a first channel and then, when the target is illuminated by the second code frequency (F.sub.2), the corresponding received signal (S.sub.2) is sampled and routed to a second channel; and secondly, means for the linear combination of the signal (S.sub.1) present in the first channel and the signal (S.sub.2) present in the second channel, the linear combination synthesizing a filtering of the noise.
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Kemkemian Stephane
Lacomme Philippe
"Thomson-CSF"
Sotomayor John B.
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