Usually tracing the origin of an artillery shot is relatively straight forward if you know one slice of the trajectory because it's a ballistic trajectory. If a

Usually tracing the origin of an artillery shot is relatively straight forward if you know one slice of the trajectory because it's a ballistic trajectory. If a counter-battery radar can track a shell before it becomes "guided" then it can determine the point it was fired from. And since tracking the origin of a shot might also use optical and acoustic detection that pinpoints the gun firing real time, fire and move makes total sense even with guided shells. But at 30Km range even a classic shell becomes hard to precisely track. A guided shell just makes it worse. At long range a counter shot would basically be a blind shot because the target area is large enough to be considered unacceptable.