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INTERCEPT PROCEDURES TEXTBOOK
IP-6: FUNDAMENTALS OF INTERCEPT GEOMETRY II
Collision Bearing
Collision bearing (CB) is defined as an angle equal to one-half the cut angle and in the same
direction as the cut (assuming a co-speed intercept). Collision bearing is also referred to as
Collision Antenna Train Angle (CATA).
40 Left cut
Example:
40L cut = 20 Left CB
2
When a co-speed collision intercept is established, the angle off is equal to the collision
bearing. For example, 150 DTG, 30R cut, AO 15R. (1/2 of 30R = 15R)
On the B-scope presentation shown below, note that the bogey starts off of collision bearing.
Secondly, notice that once a contact is off of collision bearing, its drift will always be away from
collision bearing.
Figure 1
A bogey off collision bearing will always drift, and the drift will
always be away from collision bearing
34


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