MOPIENS’ Doppler VHF Omni-directional Radio Range (DVOR) is fully compliant with ICAO Annex 10 requirements. It under commercial operation at most of the domestic airports in Korea including Seoul AB (Code-1) Airport, Gimpo International Airport, Jeju International Airport, Cheongju International Airport, etc. This system has been supplied and is in operation worldwide including Thailand, Laos, Bhutan, Indonesia, Bangladesh, Turkey, Iran, Saudi Arabia, Mauritius. Malawi, Nigeria, et