Relative bearing indicator
Encyclopedia
A Relative bearing indicator shows the bearing
of some source relative to a vehicle carrying a detector. It is most commonly used in conjunction with an ADF (automatic direction finder) in an aircraft navigating with the aid of an NDB (non-directional beacon)
.
Bearing (navigation)
In marine navigation, a bearing is the direction one object is from another object, usually, the direction of an object from one's own vessel. In aircraft navigation, a bearing is the actual compass direction of the forward course of the aircraft...
of some source relative to a vehicle carrying a detector. It is most commonly used in conjunction with an ADF (automatic direction finder) in an aircraft navigating with the aid of an NDB (non-directional beacon)
Non-directional beacon
A non-directional beacon is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as low frequency radio range, VHF...
.