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You searched on: Author: bettye johnson Sorted by: date

Displaying records 21 to 30 of 158 records.
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21. Results in Coastal Waters With High Resolution In Situ Spectral Radiometry: The Marine Optical System ROV
Published: 10/5/2007
Authors: M Yarbrough, M Feinholz, S Flora, Terrance Houlihan, Bettye C Johnson, Yong S. Kim, Marilyn Yuen Murphy, Michael Ondrusek, D K Clark
Abstract: The solar normalized water-leaving spectral radiance is a basic ocean color remote-sensing parameter required for the vicarious calibration and bio-optical product development. Determination of normalized water-leaving spectral radiance using in-wat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841114

22. Area Measurements of Apertures for Exo-Atmospheric Solar Irradiance for JPL
Published: 9/13/2007
Authors: Maritoni Abatayo Litorja, Bettye C Johnson, J B Fowler
Abstract: A comparison of the area measurements of the limiting apertures used for total solar irradiance measurements in the Active Cavity Radiometer Irradiance Monitor II (ACRIM II) and Active Cavity Radiometer Irradiance Monitor III (ACRIM III) were conduct ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841123

23. Hyperspectral Image Projector for Advanced Sensor Characterization
Published: 12/4/2006
Authors: Steven W Brown, Joseph Paul Rice, Jorge Enrique Neira, Bettye C Johnson
Abstract: In this work, we describe radiometric platforms able to produce realistic spectral distributions and spatial scenes for the development of application-specific metrics to quantify the performance of sensors and systems. Using these platforms, sensor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841043

24. Spectrally Tunable Sources for Advanced Radiometric Applications
Series: Journal of Research (NIST JRES)
Published: 10/1/2006
Authors: Steven W Brown, Joseph Paul Rice, J D Jackson, Jorge Enrique Neira, Bettye C Johnson
Abstract: A common radiometric platform for the development of application-specific metrics to quantify the performance of sensors and systems is described. Using this platform, systems may be quantified in terms of the accuracy of measurements of standardize ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841002

25. Hyperspectral Image Projectors for Radiometric Applications
Published: 3/23/2006
Authors: Joseph Paul Rice, Steven W Brown, Bettye C Johnson, Jorge Enrique Neira
Abstract: We describe a new type of Calibrated Hyperspectral Image Projector (CHIP) intended for radiometric testing of instruments ranging from complex hyperspectral or multispectral imagers to simple filter radiometers. The CHIP, based on the same digital mi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840986

26. Simple Spectral Stray Light Correction Method for Array Spectroradiometers
Published: 2/20/2006
Authors: Yuqin Zong, Steven W Brown, Bettye C Johnson, Keith R Lykke, Yoshihiro Ohno
Abstract: In many applications, the measurement accuracy of spectroradiometers, particularly instruments with a single dispersive element, is limited by the presence of stray radiation within the instrument. A simple, practical method has been developed to co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840968

27. Bandwith and spectral stray light effects in the NASA GSFC Radiometric Calibration Facility primary transfer radiometer
Published: 1/1/2006
Authors: R A Barnes, Steven W Brown, James J. Butler, Jill Cooper, Bettye C Johnson, J E Marketon
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104314

28. Correction of Stray Light in Spectrographs: Implications for Remote Sensing
Published: 8/22/2005
Authors: Yuqin Zong, Steven W Brown, Bettye C Johnson, Keith R Lykke, Yoshihiro Ohno
Abstract: Spectrographs are used in a variety of applications in the field of remote sensing for radiometric measurements due to the benefits of measurement speed, sensitivity, and portability. However, spectrographs are single grating instruments that are su ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840972

29. Radiometric validation of NASA's Ames Research Center's Sensor Calibration Laboratory
Published: 1/1/2005
Authors: R A Barnes, S F Biggar, Steven W Brown, James J. Butler, J Cooper, P Grant, P Hajek, E Hildum, Bettye C Johnson, E F Zalewski
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101070

30. Summary of NIST Short Courses offered by the Optical Technology Division
Published: 1/1/2005
Authors: Carl C Miller, Howard W Yoon, Bettye C Johnson, Yoshihiro Ohno
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104636



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