Transmissive diffuser with a layer of polytetrafluoroethylene on the output surface for use with an on-orbit radiometric calibration

摘要

A flux diffuser for radiometrically calibrating an imaging sensor using the sun as a calibration light source, the flux diffuser including a fiberglass cloth having input and output surfaces. The input surface receives solar irradiance, and the output surface provides diffused scattered light to a radiometer. A layer of mylar may be disposed on top of the input surface. A layer of PTFE or Spectralon(TM) may be disposed on top of the output surface, and another layer of mylar may be disposed on top of the layer of PTFE or Spectralon(TM).