Figure 3 - P-8250026

INTERCEPT PROCEDURES TEXTBOOK

Figure 3

Spatial Relationship

The magnetic bearing call or bogey bearing (BB) call, provided by the GCI controller, is the

bearing from the fighter to the bogey, independent of fighter or bogey heading.

The relative azimuth (angle off), however, changes as a result of the fighter's turn and

changes in the same amount but in the opposite direction of the turn.

To illustrate this, look through a window directly in front and see an object 45 right. Now

turn your gaze 90 to the right with the window still directly in front. Before turning, the object

appeared 45 right (angle off) and after turning 90 right the object appeared to move left 90 to

45 left (angle off). Note: The position in the room has not changed, but the angle to the object

has changed.

The magnetic bearing call will not change instantaneously with a change in

fighter heading, but will change as the fighter travels through space.