A method and system for maintaining the line of sight of an airborne
camera fixed on a target by compensating for overflight velocity of the
aircraft. The compensation system automatically commands an angular
velocity of the line of sight to maintain the camera pointing at the
target being overflown. This angular velocity of the line of sight is
computed based upon the aircraft overflight velocity and upon a vector
from the aircraft to the target. This automatic compensation for aircraft
overflight velocity causes the line of sight to remain fixed upon the
target. The compensation system drives a gimbal system upon which the
camera is mounted to perform this compensation automatically.