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...

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...

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...

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...

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...

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...

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...

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

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

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

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...

Amplitude-comparison monopulse refers to a common direction finding technique. This method is used in monopulse radar, electronic warfare and radio astronomy...

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...

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...

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

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...

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

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

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

Manning, the radio operator, had made arrangements to use radio direction finding to home in to the island. The flight never left Luke Field; during...

over land and sea at different times of the day and investigated direction finding, for which he used a frame antenna. Round made important contributions...

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...

above, for measuring perpendicular distances to inaccessible places. Direction finding GSM localization Multilateration, where a point is calculated using...