I have a strange feeling about SA-4... Check this 3D AAR:
http://www.mediafire.com/?hau7ptsg3dqmpgkEven after target dissapeared it continued to track (only gates were vissible) and when shot my last missile (missile-3) with armed radiofuse right after launch, it pop-s up in the middle of nothing....
It is a known bug, if no target is flying, that the missile 3DAAR is missing the seconds.
Will be corrected with the Shilka, where it is more easily obsevable.
Also when target goes over aquisition envelope of P-40, in case of "Prinimania CU" -ON, but without tracking on angle, nor range, when target overfliing the position, the SNR continuing to rotate and after going 180 degrees it iluminates target again in the same moment, when targt appeared on the P-40 screen.... I did an experiment over Hungary, used an ~0 parameter target, which does a 90 degree turn just over the "Krug" position, and it does it the same to the 180 degrees, then, when target pops-up on P-40, it quickly adjusted 90 degrees more.... Why so? (the Hungary looks more logical, exept rotating to 180 degrees....)...
When the target is above the the SNR, than several functions could return 0, so this issue should be investigated more.