US PATENT SUBCLASS 342 / 203
.~.~ With noise reduction

Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

175  DF  WITH PARTICULAR CIRCUIT {13}
202  DF  .~ For pulse modulation {2}
203.~.~ With noise reduction

DEFINITION

Classification: 342/203

With noise reduction:

(under subclass 202) Subject matter including circuitry to distinguish between target echoes and noise pulses.