What I started to wander is what can be the aproach trakjestory of a anti ship weapon?
It has to be random and the SAM fire control computer has to have hard time to predict it.
So, I think the P-700/800 should use something like this:
It is not possible to calculate the trajestory based on the observed part of it without knowing the coeficients.
The rockets radnomly choose paths that satisfy a few condition (like endpoint has to be the ship, fuel consumption, scattering around the ship and so on) and after that just following it , and as a bonus randomly change the trust of the engine as well.