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Common terms and phrases
accuracy accurate adjusted aerial alternating current alternating voltage angle apparatus base line base-line extension beacon beam width bearing buoys cathode ray tube caused centre line channel chart coast coil Consol corner reflectors course cycle dashes Decca lines Decca Radar decometer depth direction distance dots echo sounder electric electrons error false echoes fixed frequency ground wave hyperbola increases indicated indirect radiation instance Institute of Navigation intersection kc/s knob lane identification lines of force lines of position located Loran lines Loran position maximum measured microseconds nautical miles objects observations obtained oscillator P.P.I. picture pair of stations phase difference plate port position line possible Radar installation radio radiolocation ramarks range reading receiver reflected reflector rotating scale scanner screen sea-return sector ship ship's shown in Fig signals sky wave slave speed Stavanger stylus switch tion transmission transmitting stations U.S. Navy Department velocity of propagation vibrations visible wavelength zero