Abstract: A method for spatial calibration of an infrared (IR) camera allows for a large calibration area thereby providing high fidelity results for accurate long-distance measurement. Halogen lamps capable of being surveyed are spread over a relatively wide area to serve as calibration points for the infrared camera. The halogen lamps provide a precise and symmetric signature suitable for mid-wave IR cameras. An accurate model is developed for the radial and tangential distortion of the camera system. Likewise, values for the intrinsic parameters (focal lengths and optional skew coefficient) are measured to improve real-world measurements made using images recorded from a calibrated camera system.

Abstract: A new fuze that reduces projectile miss-distance to a target, by correcting for discrepancies in anticipated round velocities through its flight. As a result, the fuze-equipped projectile is nominally aimed at a target and maintains improved accuracy relative to a conventional round. The fuze adjusts for the discrepancies in velocity by using an internal electric motor to mechanically actuate a drag-altering surface on the fuze body. In order to adjust for errors in the anticipated velocity, the fuze compares its preprogrammed velocity to its actual velocity at a given point in time during flight. An anticipated velocity table versus time in flight is constantly referenced so that appropriate adjustments in velocity can be made.