US PATENT SUBCLASS 342 / 386
.~.~ With transmisson of bearing or position determinative signals

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

350  DF  DIRECTIVE {10}
385  DF  .~ Beacon or receiver {2}
386.~.~ With transmisson of bearing or position determinative signals {6}
387  DF  .~.~.~> Iso-chronic type {2}
393  DF  .~.~.~> Iso-frequency type
394  DF  .~.~.~> Iso-phase type {3}
398  DF  .~.~.~> Rotating beacon signal
399  DF  .~.~.~> Tacan {2}
407  DF  .~.~.~> Fixed course or bearing indicating {5}

DEFINITION

Classification: 342/386

With transmission of bearing or position determinative signals:

(under subclass 385) Subject matter including one or more radiating stations whose radiated energy when received, allows a determination of the location of the receiving station in one or more lines or planes having known fixed locations relative to the radiating stations.

(1) Note. Frequently two or more bearing determinations are used to fix the position of the receiving station by intersection of bearing lines or planes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

450+, for position indicating involving the use of signals which have no distinctive bearing or position determination characteristics.