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Author: bettye johnson
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Displaying records 161 to 166.
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161. Overview of Radiation Thermometry
Published: Date unknown
Author: Bettye C Johnson
Abstract: Researchers in the Optical Technology Division utilize measurements of radiant flux to determine temperature. This includes the dissemination of the ITS-90 above 961.78 degrees C using spectral radiance ratios (optical pyrometry) and absolute measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841505

162. Radiometric Validation of NASA's Ames Research Center's Sensor Calibration Laboratory
Published: Date unknown
Authors: Steven W Brown, Bettye C Johnson, S F Biggar, E F Zalewski, J W Cooper, P Hajek, E Hildum, P Grant, R Barnes, James J. Butler
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841853

163. Simultaneous Measurement of Up-Welling Spectral Radiance Using a Fiber-Coupled CCD Spectrograph
Published: Date unknown
Authors: M Yarbrough, S Flora, M Feinholz, Terrance Houlihan, Yong S. Kim, Steven W Brown, Bettye C Johnson, Kenneth Voss, Dennis Clark
Abstract: Determination of the water-leaving spectral radiance using in-water instrumentation requires measurements of the up-welling spectral radiance (Lu) at several depths. If these measurements are separated in time, changes in the measurement conditions ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841121

164. Temperature Scales Using Radiation Thermometers Calibratied From Absolute Irradiance and Radiance Responsivity
Published: Date unknown
Authors: Howard W Yoon, David W Allen, Charles E Gibson, Robert D. Saunders, Bettye C Johnson, Steven W Brown, Keith R Lykke
Abstract: In the International Temperature Scale of 1990 (ITS-90), temperatures above the freezing temperature of silver are defined with radiation thermometers calibrated using spectral radiance ratios to one of the silver-, gold- or copper-freezing temperatu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841740

165. The Establishment and Verification of Traceability for Remote Sensing Radiometry, With an Eye Towards Intercomparison of Results
Published: Date unknown
Authors: Bettye C Johnson, Joseph Paul Rice, Steven W Brown
Abstract: Establishment of traceability is necessary for placing results and estimates of their uncertainty on an absolute scale. There are a number of factors that must be considered when comparing independent results during missions that cannot be neglected ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841869

166. Validation of Radiometric Standards for the Laboratory Calibration of Reflected-Solar Earth Observing Satellite Instruments
Published: Date unknown
Authors: James J. Butler, Bettye C Johnson, Joseph Paul Rice, Steven W Brown, R Barnes
Abstract: Historically, the traceability of the laboratory calibration of Earth-observing satellite instruments to a primary radiometric reference scale (SI units) is the responsibility of each instrument builder. For the NASA Earth Observing System (EOS), a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841128



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