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

(NW). The intermediate direction of every set of intercardinal and cardinal direction 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...

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

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...

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...

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...

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

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

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

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

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...

systems use direction finding or triangulation of transmitter signals radiated by the mobile. This is sometimes called radio direction finding or RDF. The...

British and German interception services began to experiment with direction-finding radio equipment in the start of 1915. Captain Round, working for Marconi...

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...

improved convoy and anti-submarine tactics such as high-frequency direction finding and the Hedgehog anti-submarine system began to take a toll on the...

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...

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

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

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...

replaced the standard E 10L longwave receiver with an EZ6 unit for a G6 direction finding set. The FuG 10ZY incorporated a fixed loop D/F aerial and a homing...

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...

directions for aircraft or ships to use for radio direction finding. Aircraft use automatic direction finder (ADF) receivers which use a directional antenna...

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

triangulation, which uses angles for positioning; and direction finding, which determines the line of sight direction to a target without determining the radial...

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

War II. The advances in signals intelligence such as high-frequency direction finding, in cryptological intelligence such as Ultra, and in detection technologies...