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You searched on: Author: bettye johnson

Displaying records 101 to 110 of 154 records.
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101. The 1997 Prelaunch Radiometric Calibration of SeaWiFS, ed. by S.B. Hooker and E.R. Firestone
Published: 1/1/1999
Authors: Bettye C Johnson, E A. Early, R E Eplee, R A Barnes, R T Caffrey

102. Vacuum Processing Technique for Development of Primary Standard Blackbodies
Published: 1/1/1999
Authors: M Navarro, S S Bruce, Bettye C Johnson, A V Murthy, Robert D. Saunders

103. A 400 nm to 2500 nm Absolute Spectral Radiance Comparison Using Filter Radiometers
Published: 10/1/1998
Authors: Howard W Yoon, Bettye C Johnson, D Kelch, S F Biggar, P R Spyak
Abstract: An integrating sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Institute of Standards and Technology (NIST), resulting in values of spectral radiance in the 400 nm to ...

104. Evaluation of Uncertainties in Fundamental Radiometric Measurements
Published: 10/1/1998
Authors: Benjamin K Tsai, Bettye C Johnson
Abstract: The uncertainty of measurements is critical in furthering the development of radiometric science and acquiring an increased understanding of its principles. Proper analysis of measurement uncertainties provides an indication of how well the measure ...

105. Initial Results of the Bidirectional Reflectance Characterization Round-Robin in Support of EOS
Published: 10/1/1998
Authors: Bettye C Johnson, P Y. Barnes, Thomas R. O'Brian, James J. Butler, C J Bruegge, S F Biggar, P R Spyak, M M Pavlov
Abstract: Laboratory measurements of the bidirecitonal reflectance distribution function (BRDF) of diffusely reflecting samples are required to support calibration in the National Aeronautics and Space Administration's (NASA's) Earth Observing System (EOS) pro ...

106. Short-Term Stability Measurements of a Germanium Plotodiode Radiometer
Published: 10/1/1998
Authors: G Andor, Bettye C Johnson
Abstract: This paper describes a general stability measurement method for the short term stability, or repeatability, for radiometers using fixed-point blackbodies [BBs] as radiation sources. A germanium photodiode was used for the detector in the radiometer. ...

107. The 1996 North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers
Series: Journal of Research (NIST JRES)
Published: 9/1/1998
Authors: E A Thompson, Bettye C Johnson, P Disterhoft, D Wardle, E Wu, J Ehramjian, J Tusson, T Mestechkina, M Beaubian, J Gibson, D Hayes, J DeLuisi, E A. Early, W Mou
Abstract: Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet irradiance at the surface of the Earth. To assess the ability of spectr ...

108. Radiometric and Engineering Performance of the SeaWiFS Quality Monitor (SQM): A Portable Light Source for Field Radiometers
Published: 8/1/1998
Authors: Bettye C Johnson, Ping-Shine Shaw, S B. Hooker, D C Lynch

109. A 400 nm to 2500 nm Absolute Spectral Radiance Comparison using Filter Radiometers
Published: 1/1/1998
Authors: Howard W Yoon, Bettye C Johnson, D Kelch, S F Biggar, P R Spyak

110. Description of a portable spectroradiometer to validate EOS radiance scales in the shortwave infrared
Published: 1/1/1998
Authors: W W Brown, Bettye C Johnson, W Yoon h

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