US PATENT SUBCLASS 342 / 85
.~.~.~ Function of distance

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

73  DF  RETURN SIGNAL CONTROLS RADAR SYSTEM {3}
82  DF  .~ Transmitter {2}
83  DF  .~.~ Signal phase or frequency other than pulse repetition frequency (PRF) {2}
85.~.~.~ Function of distance {2}
86  DF  .~.~.~.~> With constant phase
87  DF  .~.~.~.~> With constant beat frequency

DEFINITION

Classification: 342/85

Function of distance:

(under subclass 83) Subject matter wherein the radar transmitter frequency is varied as function of target distance.