Although I'm all for people making up their own version of content so it fits their vision. I think the original one was better. The Mind Probe is a big ball, no screen, nothing. It stands to reason that it being a mind thingy, its interface is actually a direct link in your mind. It reads the target's mind and uploads the info to your mind. I used that concept for advanced armours, justifying the stat buffs by the benefits of the "mind link interface".
By opposition, UFO navigation is about guiding a craft by using gravity waves. Since the user is not "on" the missile, which is not using gravity waves either, it seems farfetched that the two are connected.
Maybe if it had both Mind Probe and UFO Navigation... hum..
(Also, if you want to blow up a barn, bring some high explosives and cheaper large rockets. A guided missile is fancy tech to blow up aliens!)