Direction finding (DF), radio direction finding (RDF), or radiogoniometry is the use of radio waves to determine the direction to a radio source. The source...

intermediate direction of every pair of neighboring cardinal and intercardinal directions is called a secondary intercardinal direction. These eight shortest...

direction finding (ARDF, also known as radio orienteering, radio fox hunting and radiosport) is an amateur racing sport that combines radio direction...

High-frequency direction finding, usually known by its abbreviation HF/DF or nickname huff-duff, is a type of radio direction finder (RDF) introduced in...

cover for the work, meaning Range and Direction Finding but suggesting the already well-known Radio Direction Finding. Late in 1935, responding to Lindemann's...

high frequency (HF) radio direction finding systems to be installed on Royal Navy convoy escort ships. Such direction finding systems were referred to...

Doppler radio direction finding, also known as Doppler DF, is a radio direction-finding method that generates accurate bearing information with minimal...

Round, working for Marconi, began carrying out experiments with direction-finding radio equipment for the army in France in 1915. By May 1915, the Admiralty...

signal vanishes) which gives a tiny antenna for exceedingly accurate direction-finding, better than most moderately large antennas, and as good as many huge...

used until the end of the war Aware of the danger presented by radio direction finding (RDF), the Kriegsmarine developed various systems to speed up broadcast...

azimuthal direction a radio signal was coming from in order to find the location of the radio transmitter; a process called radio direction finding. Prior...

Sometimes both functions were operated at the same site, with the direction finding (D/F) hut being a few hundred metres from the main interception building...

Aliasing has changed its apparent frequency of rotation. A reversal of direction can be described as a negative frequency. Temporal aliasing frequencies...

Sundial#Using a sundial as a compass. Astronomy provides a method for finding direction at night. All the stars appear to lie on the imaginary celestial sphere...

pp. 99–177. Kayton, Fried 1977, p.116 "An Introduction to Radio Direction Finding". Cognitive Ecology. October 22, 2021. Retrieved April 4, 2024. Murphy...

important developments was ship-borne direction-finding radio equipment, known as HF/DF (high-frequency direction-finding, or Huff-Duff), which started to...

classification) is an algorithm used for frequency estimation and radio direction finding. In many practical signal processing problems, the objective is to...

or a wullenweber, is a large circular antenna array used for radio direction finding. They are used by military and government agencies to triangulate...

experiments with direction finding radio equipment for the army in France in 1915. Hall instructed him to build a direction finding system for the navy...

locating of a radio transmitter by bearings taken from two or more direction finding stations, the site of the transmitter being at the point of intersection...

a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible...

antenna array, built at eight locations during the Cold War for HF/DF direction finding of high priority targets. The worldwide network, known collectively...

As the search and rescue team approach the search areas, they use Direction Finding (DF) equipment to locate the beacon using the 121.5 MHz homing signal...

and bunny chasing), is an activity wherein participants use radio direction finding techniques to locate one or more radio transmitters hidden within...

Bondarenko and V.I. Slyusar. "Influence of jitter in ADC on precision of direction-finding by digital antenna arrays. // Radioelectronics and Communications...

suitable, even for Morse code sources, and that was the task of radio direction finding, RDF. The regenerative system was highly non-linear, amplifying any...

championships. Radiosport also can refer to the sport of amateur radio direction finding (ARDF). Although they represent a broad range of amateur radio interests...

Marconi Company in 1912. BTDF was the most prevalent form of naval direction finding from the 1920s to well into the 1980s, and was used as a major part...

December 1973) was a Scottish radio engineer and pioneer of radio direction finding and radar technology. Watt began his career in radio physics with...

number of locations during the Cold War for high frequency radio direction finding (HF/DF) and signals intelligence (SIGINT). In the Joint Electronics...