It is a more accurate version of the (VHF omnidirectional range)/(distance measuring equipment) (VOR/DME) system that provides bearing and range information for military aviation, the DME portion of the TACAN system is available for civil use.
It is a more accurate version of the VHF omnidirectional range/distance measuring equipment (VOR/DME) system that provides bearing and range information for civil aviation. At VORTAC facilities where a VOR is combined with a TACAN, the DME portion of the TACAN system is available for civil use.