US PATENT SUBCLASS 342 / 28
.~ By motion detection

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

27  DF  PRESENCE DETECTION ONLY {1}
28.~ By motion detection

DEFINITION

Classification: 342/28

By motion detection:

(under subclass 27) Subject matter wherein the presence of a target is detected by sensing target movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

104+, for determining velocity by radar sensing of target motion.

106+, for moving target indicators (MTI), per se, where the signals from nonmoving targets are eliminated.