What is radio triangulation?
Triangulation is a process by which the location of a radio transmitter can be determined by measuring either the radial distance, or the direction, of the received signal from two or three different points. Triangulation is sometimes used in cellular communications to pinpoint the geographic position of a user.
What is direction finding antenna?
Direction finding antennas are capable of measuring the direction from which a received signal was transmitted. This direction information can be utilized to determine the location of transmission (via triangulation, for example).
What is the purpose of a radio direction finder?
A radio direction finder (RDF) is a device for finding the direction, or bearing, to a radio source. The act of measuring the direction is known as radio direction finding or sometimes simply direction finding (DF).
How is the direction of a radio signal determined?
Radio Direction Finding works by comparing the signal strength of a directional antenna pointing in different directions. At first, this system was used by land and marine-based radio operators, using a simple rotatable loop antenna linked to a degree indicator.
How was a direction finder used in World War 2?
World War II US Navy high frequency radio direction finder Radio Direction Finding works by comparing the signal strength of a directional antenna pointing in different directions. At first, this system was used by land and marine-based radio operators, using a simple rotatable loop antenna linked to a degree indicator.
What do you call an automatic direction finder?
The loop antenna is used for automatic radio compass. An automatic direction finder (ADF) is a marine or aircraft radio-navigation instrument that automatically and continuously displays the relative bearing from the ship or aircraft to a suitable radio station.