suunnannäköyksikkö
Suunnannäköyksikkö is a Finnish term that translates to "direction finder" or "direction-finding unit" in English. It refers to a device or system designed to determine the direction of a radio signal. These units are crucial components in various applications, including military surveillance, air traffic control, emergency services, and scientific research. The fundamental principle behind a suunnannäköyksikkö involves comparing the signal strength or phase received by multiple antennas or a directional antenna. By analyzing these differences, the unit can pinpoint the origin of the transmission.
Early direction finders often used rotating directional antennas or arrays of fixed antennas. Modern suunnannäköyksikkö systems