Possibly does not have a high enough, I don't know, response ping strength for the Doppler to track it, I don't know I'm just planning on reading the manual tomorrow. Could also be the curvature of the earth, from a quick glance at the manual, but if you can aqurie then that means that the missile is either:
1) out of range for the type of target
2) does not have a high enough signal strength for the missile's guidance system to track the target after launch. Keep in mind, in the sa-5 the missile has it's own transmitter receiver, right?
Again, I know next to nothing about this system yet, you are asking the wrong guy. But given two days you might be asking the right man for the job!
No harm scenario would be nice to try out first, thanks. No ashuluk for this one??
Isn't the neva also in the simulator all ready? Or are you talking about something else. Maybe a naval mounted neva? I highly doubt hpasp could do that. You would have to take into effect that the SNR is moving and all sorts of stuff. Would be a real challenge.
Also, what is wrong with old systems?