Relative bearing

With Funkseitenpeilung (English relative bearing, RB) is the angle between the airplane longitudinal axis and the radio base line, ie the airliner - ground transmitter, measured clockwise, respectively. The type of RB alone is not sufficient to determine where the aircraft is on the state line to the ground station. This requires a further bearing.

The specification RB 180 ° for example, means that the received ground station is located just behind the aircraft. For a RB 090 °, the station is right abeam (English abeam ) from the aircraft. A RB is 360 °, the station is just ahead on the aircraft longitudinal axis.