释义 |
minimum reception altitude
minimum reception altitudeThe lowest altitude required to receive adequate signals to determine specific very high frequency omnirange and tactical air navigation fixes.minimum reception altitude
minimum reception altitude (MRA) The lowest altitude required to receive adequate signals to determine specific very high frequency omnirange/tactical air navigation fixes. This is the lowest altitude at which an intersection can be determined. It is depicted on aeronautical charts as shown in the illustration.AcronymsSeeMRA |