Radiometric validation of NASA's Ames research center's sensor calibration laboratory

Steven W. Brown, B. Carol Johnson, Stuart F Biggar, Edward F. Zalewski, John Cooper, Pavel Hajek, Edward Hildum, Patrick Grant, Robert A. Barnes, James J. Butler

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The National Aeronautics and Space Administration's (NASA's) Ames Research Center's Airborne Sensor Facility (ASF) is responsible for the calibration of several airborne Earth-viewing sensor systems in support of NASA Earth Observing System (EOS) investigations. The primary artifact used to calibrate these sensors in the reflective solar region from 400 to 2500 nm is a lamp-illuminated integrating sphere source. In September 1999, a measurement comparison was made at the Ames ASF Sensor Calibration Facility to validate the radiometric scale, establish the uncertainties assigned to the radiance of this source, and examine its day-to-day repeatability. The comparison was one of a series of validation activities overseen by the EOS Calibration Program to ensure the radiometric calibration accuracy of sensors used in long-term, global, remote-sensing studies. Results of the comparison, including an evaluation of the Ames Sensor Calibration Laboratory (SCL) measurement procedures and assigned radiometric uncertainties, provide a validation of their radiometric scale at the time of the comparison. Additionally, the maintenance of the radiance scale was evaluated by use of independent, long-term, multiyear radiance validation measurements of the Ames sphere source. This series of measurements provided an independent assessment of the radiance values assigned to integrating sphere sources by the Ames SCF. Together, the measurements validate the SCF radiometric scale and assigned uncertainties over the time period from September 1999 through July 2003.

Original languageEnglish (US)
Pages (from-to)6426-6443
Number of pages18
JournalApplied Optics
Volume44
Issue number30
DOIs
StatePublished - Oct 20 2005

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aeronautics
NASA
Calibration
radiance
sensors
Sensors
Earth (planet)
self consistent fields
Electric lamps
maintenance
luminaires
artifacts
remote sensing
Remote sensing
evaluation
Uncertainty

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Brown, S. W., Johnson, B. C., Biggar, S. F., Zalewski, E. F., Cooper, J., Hajek, P., ... Butler, J. J. (2005). Radiometric validation of NASA's Ames research center's sensor calibration laboratory. Applied Optics, 44(30), 6426-6443. https://doi.org/10.1364/AO.44.006426

Radiometric validation of NASA's Ames research center's sensor calibration laboratory. / Brown, Steven W.; Johnson, B. Carol; Biggar, Stuart F; Zalewski, Edward F.; Cooper, John; Hajek, Pavel; Hildum, Edward; Grant, Patrick; Barnes, Robert A.; Butler, James J.

In: Applied Optics, Vol. 44, No. 30, 20.10.2005, p. 6426-6443.

Research output: Contribution to journalArticle

Brown, SW, Johnson, BC, Biggar, SF, Zalewski, EF, Cooper, J, Hajek, P, Hildum, E, Grant, P, Barnes, RA & Butler, JJ 2005, 'Radiometric validation of NASA's Ames research center's sensor calibration laboratory', Applied Optics, vol. 44, no. 30, pp. 6426-6443. https://doi.org/10.1364/AO.44.006426
Brown, Steven W. ; Johnson, B. Carol ; Biggar, Stuart F ; Zalewski, Edward F. ; Cooper, John ; Hajek, Pavel ; Hildum, Edward ; Grant, Patrick ; Barnes, Robert A. ; Butler, James J. / Radiometric validation of NASA's Ames research center's sensor calibration laboratory. In: Applied Optics. 2005 ; Vol. 44, No. 30. pp. 6426-6443.
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