A tone indicated he had target lock as the missile began to grumble inside the tube.

I can't get a target lock on their pattern signatures!

Once Jan achieved what everyone called target lock, there was no escape.

At this range, it was relatively easy to foil the Romulans' target locks.

Someone had a target lock on his ship.

The window of opportunity for target lock was shrinking rapidly.

A bump key must correspond with the target lock in order to function correctly.

And when my forward beam gun gets a target lock on him, I will play him like a resonator.

Passive systems will not provide a solid or definite target lock.