Filter radiometer monitoring system for integrating sphere sources

John Marketon; Peter Abel; James J. Butler; Gilbert R. Smith; John W. Cooper

doi:10.1117/12.417131

9 February 2001 Filter radiometer monitoring system for integrating sphere sources

John Marketon, Peter Abel, James J. Butler, Gilbert R. Smith, John W. Cooper

Proceedings Volume 4169, Sensors, Systems, and Next-Generation Satellites IV; (2001) https://doi.org/10.1117/12.417131
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

Two critical requirements of a calibration source are short- and long-term operational stability and repeatability. Monitoring the source is an asset in determining the origin of temporal changes, thus increasing confidence in source performance and quantifying repeatability. Monitor data which fall outside established parameters indicate that the source requires maintenance or re-calibration against the standard. The NASA GSFC Code 920. 1 Radiance Calibration Facility (RCF) has developed a Filter Radiometer Monitoring System (FRMS) to continuously monitor the performance of its integrating sphere calibration sources in the 400-2400nm region. Sphere output change mechanisms include lamp aging, coating (BaSO4) deterioration, and water vapor level. FRMS wavelength bands are selected to be sensitive to changes caused by these mechanisms. Several FRMS bands coincide with common remote sensing instrument bands.

Citation Download Citation

John Marketon, Peter Abel, James J. Butler, Gilbert R. Smith, and John W. Cooper "Filter radiometer monitoring system for integrating sphere sources", Proc. SPIE 4169, Sensors, Systems, and Next-Generation Satellites IV, (9 February 2001); https://doi.org/10.1117/12.417131

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