US PATENT SUBCLASS 342 / 171
.~.~ Doppler

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

165  DF  TESTING OR CALIBRATING OF RADAR SYSTEM {5}
169  DF  .~ By simulation {3}
171.~.~ Doppler

DEFINITION

Classification: 342/171

Doppler:

(under subclass 169) Subject matter wherein the radar apparatus under test utilizes the change of frequency of its transmitted signals caused by the time rate of change of the effective distance travelled by the signals between the source of signal transmission and the point of observation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

84, 99 and 104+, for radar systems or devices using doppler techniques.