Patent ID: 9541763
Date: 2017-01-10
CPC Classifications: G01C,G02B

Claim:
1. An active head up display (HUD) boresight alignment system, comprising: an aircraft inertial reference unit (IRU) rigidly coupled with the aircraft and configured to define an aircraft boresight indicative of a three axis angular orientation of the aircraft; a HUD angular orientation detector rigidly arranged relative to at least one component of a HUD in the aircraft, and configured to determine a HUD boresight indicative of a three axis angular orientation of the HUD during flight of the aircraft; and a processor coupled with the aircraft IRU and the HUD angular orientation detector, the processor configured to determine a boresight angular offset of the HUD boresight to the aircraft boresight for at least one axis of the three axis angular orientation, and to correct for the boresight angular offset based on the determined boresight angular offset.