[Animats]

There's a case for adding some jitter, maybe 10us, to the laser timing. That prevents any attacker from synchronizing a jammer. Common technique in military radars. If you can't synch, you can't present an illusion of something being closer than it is, and any return from a real obstacle will come in before a jamming signal from a further away transponder or mirror.

Active systems like radars have a "burn-through" short range - at some short distance, the sensing system overpowers a jammer. So if you're seeing junk at distance, but good signal at short range, you know you're being jammed and have to slow down.

Active jamming is not that effective against things that receive directionally, as people using car "radar jammers" near military bases sometimes discover. They show up on military radars as hostile targets. That's even filtering down to police LIDAR guns.