Which term defines A-pole?

Which term defines A-pole?

• A. Distance between launching aircraft and target when missile goes active.
• B. Separation at endgame.
• C. Maximum distance.
• D. Track angle bias.

Answer: (A)

A-pole is the activation distance—the range between the launching aircraft and the target at the moment the missile switches to active guidance. This moment defines when the seeker or active sensor begins actively tracking the target, which in turn shapes how you time maneuvers, calculate lead, and manage closing rate in the engagement. It’s different from endgame separation, which is how far apart the aircraft are near intercept; from maximum distance, which is simply how far the missile can travel; and from track angle bias, which concerns errors in the radar’s angle measurement rather than when guidance activates.

A-pole is the activation distance—the range between the launching aircraft and the target at the moment the missile switches to active guidance. This moment defines when the seeker or active sensor begins actively tracking the target, which in turn shapes how you time maneuvers, calculate lead, and manage closing rate in the engagement. It’s different from endgame separation, which is how far apart the aircraft are near intercept; from maximum distance, which is simply how far the missile can travel; and from track angle bias, which concerns errors in the radar’s angle measurement rather than when guidance activates.