US PATENT SUBCLASS 342 / 86
.~.~.~.~ With constant phase

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  DF  .~.~.~ Function of distance {2}
86.~.~.~.~ With constant phase

DEFINITION

Classification: 342/86

With constant phase:

(under subclass 85) Subject matter wherein a constant phase relationship is maintained between the transmitted and returned signals.