No simple answer.
It’s possible to design smart munitions (Copperhead, Excalibur) that can take the massive acceleration in being fired in a 155 mm cannon. A full blown computer-sensor-guidance package with foldable steerable fins is not a trivial exercise but it can and has been done.
As you noted timing is everything! Releasing the payload a microsecond off would be a disaster! Also a challenge, and exactly how it’s done is beyond my ken. My ‘mature’ computer has a 2.8 GHz processor, that’s one clock cycle every 0.36 nanoseconds, about 3,000 decisions per microsecond...
Any idea on the acceleration with this type of launch? Whatever they launch would be subjected to a sustained high g-load.