I am not sure how it was programed (only Hpasp knew), but definitely this is not a correct behavior.


- target is flying with great Parameter, from left to right.
- In this case of UPR/K method, the missile is leading the target in azimuth to the right(green arrow).
- This lead angle is limited by the Dvina/Volhov antenna system design.
- Missile is flying at the right limit (red line).
- When the target gets closer to the missile (blue arrow), the missile starts to aim the half lead point instead of the right limit. <-- this point could be the marked one at the comment above (white)



The red section is where the missile right lead is limited from the target azimuth.
Blue section is where the missile is flying ideal Half Lead.



If you have the 3DAAR, you can measure the azimuth limit of the Volhov/Dvina design...


This is an advanced++ topic, but if you understand why the missile behaviour this way, you again stepped to a new level.