Does this work like target lock and Jam? Measure everything that's in range 0-1 and then decide on a target?

or do you select a target then measure to it to see if you are in range?

Since all the other effects seem to let you measure and then pick I have been assuming that it works the same way, but am not 100% sure if this is true.

I believe you determine available ships that can be hit by the affect, like target lock or attacking, and then choose one.