Preflight cross-calibration radiometer for Eos AM-1 platform visible and near-IR sources

Stuart F. Biggar, Philip N. Slater

Research output: Contribution to journalConference articlepeer-review

27 Scopus citations


A cross-calibration radiometer covering the 400- to 900-nm range with a silicon "trap" detector has been designed and built. The radiometer was designed for comparing the output of preflight radiometric calibration sources for the MODIS and ASTER Eos sensors. These sources will be large aperture spherical-integrating sources with tungsten-halogen-bulb internal illumination. The two spheres will be calibrated using standards from NIST and NRLM. The radiometer is intended to compare the output of the spheres at seven wavelengths corresponding to MODIS bands, some of which overlap ASTER bands. The wavelength selection is by highly blocked nominal 10- to 15-nm-wide interference filters. The radiometer detectors, apertures, and filters are held at a controlled temperature slightly above ambient. The design and calibration of the radiometer are described.

Original languageEnglish (US)
Pages (from-to)243-249
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Aug 25 1993
EventSensor Systems for the Early Earth Observing System Platforms 1993 - Orlando, United States
Duration: Apr 11 1993Apr 16 1993

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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