US PATENT SUBCLASS 342 / 130
.~.~ Plural modulation

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

118  DF  DETERMINING DISTANCE {11}
128  DF  .~ With frequency modulation {3}
130.~.~ Plural modulation {1}
131  DF  .~.~.~> Combined with pulse modulation (e.g., frequency agile) {1}

DEFINITION

Classification: 342/130

Plural modulation:

(under subclass 128) Subject matter wherein the radar carrier signal is modified by more than one modifying signal.