As defined by FS-1037C, radiodetermination is «the determination of the position, velocity or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radio waves.»
There are two main fields to radiodetermination:
Triangulation using radiodetermination
British Post Office mobile RDF, 1927
Direction-finding system Galeta Island
Direction finder with direction-finding aereal
This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C".