接收信号强度指示器测距技术
received signal strength indicator RSSI ranging te
水声测距指示器
acoustic-ranging indicator
内部实际传动装置指示器故障
internal actual gear indicator fault
测回音控制装置指示元
half echo control deveice indicator
测距装置
distance measuring equipment
distance measuring device
DME
测距装置地面信标天线
DME ground beacon antenna
测量指示装置
measuring indication system