Guided
A guided weapon uses a signal along with wireless telemetry, magnetic guidance, or another means of guiding its payload after the weapon has been fired. When you take a move action to aim the weapon and then fire it on the same turn (including doing so with a sniper weapon), your target does not gain the bonus to AC provided by cover, partial cover, or soft cover. Improved cover and total cover still confer their bonuses normally.
Source
Armory pg. 28