An abbreviation of Radio Direction and Range. The electronic means of determining the presence of a target by transmitting an electromagnetic pulse which is reflected back to the antenna by the target.
Sisifinyezo seCala likaNomathotholo kunye noMgama (Radio Direction and Range). Zindlela zokufumana ngombane ubukho bexhoba ngokudlulisela uluvo olunesitsalane sombane olubuyiselwa emva lixhoba ngeempondo zikanomathotholo.