
 INTERCEPT PROCEDURES TEXTBOOK
Figure 3
Lateral separation (feet) = TA X SR X 100, which in the above example would be 30 (TA) X
10 (nm) X 100 = 30,000 feet. The actual formula involves trigonometric functions, but the
above formula is accurate enough for intercept execution.
Further, lat sep may be computed in miles by simply taking the feet of lat sep divided by
6000 (6000 feet = approximately 1 nautical mile).
TA x SR x 100
or
TA x SR
6000
60
The formula for computing lateral separation in feet is:
LD' = TA x SR x 100
Vertical Displacement
Vertical displacement is the perpendicular distance the fighter is located above or below the
bogey's flight path. This represents the altitude difference between the fighter and bogey and
should be computed in feet. Note that the same formula for feet of lateral displacement applies
to vertical displacement, except degrees of elevation is used instead of degrees of target aspect.
30

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