I think that you should search for a missile system that supports advanced homing, flying missiles and flying targets.
Yes I am working on a missile system that supports as many as I can think of and am currently very busy with the maths for exacly what you want... but am a bit stuck atm...
However this is real hard stuff so I suggest you to look for a simpler missile system that still supports homing missiles and use that one for the time being.