automatic direction finder

Equipment to determine the direction from which an electromagnetic signal is being generated. It can either be airborne or ground-based equipment. It operates in medium or low frequencies, consists of basically a loop aerial, and gives the null position of the transmitter. To remove 180° ambiguity, a sense aerial is used. The commonest air-interpreted ADF is the one that utilizes a ground-based transmitting station called an NDB (nondirectional beacon).

Aviation dictionary. 2014.

Look at other dictionaries:

  • automatic direction finder — n. a type of radio compass that indicates automatically the direction of the station to which it is tuned, used esp. on aircraft * * * …   Universalium

  • automatic direction finder — n. a type of radio compass that indicates automatically the direction of the station to which it is tuned, used esp. on aircraft …   English World dictionary

  • automatic direction finder — automatic direction finder, a radio receiving set that automatically indicates the direction of the station or stations to which it is tuned, used especially on aircraft …   Useful english dictionary

  • Automatic Direction Finder — Ein Radiokompass, auch ADF (engl. automatic direction finder ), RDF (engl. radio direction finder), oder Funkkompass ist eine bordseitige Empfangsanlage zur Funknavigation mittels Funkpeilung zu einem NDB (dtsch. ungerichtetes Funkfeuer ) oder zu …   Deutsch Wikipedia

  • Automatic Direction Finder — Radiocompas Un radiocompas ou radiogoniomètre est un récepteur radio embarqué à bord d un navire ou d un avion lui permettant de recevoir et d indiquer la direction de balises ou de radiophares. Ce récepteur comporte une rose graduée de 0 à 360° …   Wikipédia en Français

  • automatic direction finder — noun a radio navigation aid. Abbrev.: ADF …   Australian English dictionary

  • direction finder — A radio receiver equipped with a directional sensing antenna used to take bearings on a radio transmitter. Specialized radio direction finders are used in aircraft as air navigation aids. Others are ground based, primarily to obtain a “fix” on a… …   Aviation dictionary

  • direction finder — Synonyms and related words: Bourdon tube, Gyropilot, Gyrosin compass, HFDF, Mach meter, RDF, absolute altimeter, accelerometer, aerial reconnaissance camera, aerometer, aeroscope, air log, altigraph, altimeter, ammeter, anemograph, anemometer,… …   Moby Thesaurus

  • Radio direction finder — Civil Air Patrol members practice using a handheld radio direction finder to locate an emergency locator transmitter …   Wikipedia

  • Radio direction finder — Ein Radiokompass, auch ADF (engl. automatic direction finder ), RDF (engl. radio direction finder), oder Funkkompass ist eine bordseitige Empfangsanlage zur Funknavigation mittels Funkpeilung zu einem NDB (dtsch. ungerichtetes Funkfeuer ) oder zu …   Deutsch Wikipedia

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