Abstract: In a weapon boresighting system for aircraft and other vehicles a pair of spaced apart, collimated laser beams oriented to a fixed reference line on the vehicle are transmitted to a receiver positioned at the weapon or other module to be boresighted, the receiver having a first section including a position sensitive cell for measuring pitch and yaw relative to a pitch and yaw reference surface and a second section including a position sensitive cell for measuring roll relative to a roll reference surface.

Abstract: In a weapon boresighting system for aircraft and vehicles, an optical square is oriented to a fixed reference line on the vehicle and provides the directionality of a pair of orthogonally positioned of laser illuminated retroreflective catadioptric collimators attached to said optical square whose outputs are directed via one or more deviators or periscopes to a pair of retroreflective catadioptric receivers orthogonally attached to a second optical square positioned at the weapon to be boresighted, each said receiver imaging the laser on a position sensitive sensor, the outputs of the latter indicating the pitch roll and yaw condition at the weapon.