Hamas rocket launchers are cheap steel frames that look like they could be made in a garage workshop for $20 each. The rocket storage sites are more important, but it's likely they have them dispersed all over.
Forgive my ignorance.
Here in the U.S. a whole lot of areas have a triangulation scheme that allows the cops to determine almost immediately
where shots in a city are fired from.
No such apparatus that can determine and respond to rocket launchers immediately?