high-frequency direction finding

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• Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… …   Wikipedia

• direction finder — direction finding. Radio. a receiver with a loop antenna rotating on a vertical axis, used to ascertain the direction of incoming radio waves. [1910 15] * * * ▪ instrument or  radio direction finder        radio receiver and antenna system for… …   Universalium

• Frequency (film) — Infobox Film name = Frequency image size = 200px caption = director = Gregory Hoblit producer = Gregory Hoblit Hawk Koch Toby Emmerich Bill Carraro writer = Toby Emmerich narrator = starring = Dennis Quaid James Caviezel Elizabeth Mitchell Andre… …   Wikipedia

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

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

• Intermediate frequency — In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier… …   Wikipedia

• Time-frequency analysis — is a body of techniques for characterizing and manipulating signals whose component frequencies vary in time, such as transient signals.Whereas the technique of the Fourier transform can be used to obtain the frequency spectrum of a signal whose… …   Wikipedia

• HFDF — high frequency direction finding …   Military dictionary

• Huff-Duff — High frequency direction finder is usually known by its acronym HF/DF, pronounced Huff Duff. This has become the common name for this type of radio direction finder, and was coined during World War II.The idea of using two or more radio receivers …   Wikipedia

• HFDF — High Frequency Direction Finding (Governmental » Military) …   Abbreviations dictionary

• HF/DF — High Frequency Direction Finding Peiltechnik der Royal Navy im 2. Weltkrieg ( > Lexikon der Text und Datenverarbeitung ) …   Acronyms