I've no doubt the compensation is more complex than what I...

I've no doubt the compensation is more complex than what I banged out in a couple of minutes.
But the laser part of it I feel is likely different in both accuracy and implementation to traditional Laser Guidance systems.
Traditional Laser Guidance systems don't need to be as accurate as the FBR DST.
You don't need sub millimeter accuracy for a missile even when it is within 30 meters of its target. With a traditional Laser Guidance system you can be 100 mm off target and still have the same desired result.
Lots of mess.

If your bricks are 100 mm off target, there will be trouble.