Back to results
US 4,058,734 AGranted
Passive infrared resolution target
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorLeo O. Vroombout
Life of this patent
Estimating the term…
Abstract
A passive target array, for measuring the resolution of infrared reconnaissance sets, having a heat retaining background pad. A plurality of perforated aluminum strips are laid on the pad in a conventional photographic resolution target configuration.
Claims3
A passive resolution target array for testing of infrared reconnaissance sets in an area having a substantially normal scene average temperature, comprising:
- a background pad of heat retaining material;
- said background pad including means, responsive to solar radiation for providing a pad temperature greater than the scene average temperature;
- a plurality of perforated aluminum sheets with between 50 and 80 percent open area positioned on said pad in a conventional resolution measurement target configuration.
Dependencies are inferred from the claim text.