ETSI TS 102 842-2011 VHF空-地和空-空数据链路(VDL)模式4无线设备.航空移动(机载)设备的技术特性和测量方法(版本1.2.2)
VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment (V1.2.3)