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Displaying records 71 to 80 of 128 records.
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71. Radiometer standard for absolute responsivity calibrations from 950 nm to 1650 nm with 0.05% (k = 2) uncertainty
Published: 6/2/2009
Authors: George P Eppeldauer, Howard W Yoon, Yuqin Zong, Thomas C Larason, Allan W. Smith, M. Racz
Abstract: A sphere-input transfer-standard detector has been developed to calibrate detectors and radiometers for absolute spectral power, irradiance, and radiance responsivity in the near-IR range with uncertainties similar to those of silicon trap-detector c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900973

72. Radiometric Calibration History of MOBY/NIST Single Channel Dual Mode Radiometers
Published: 10/1/2000
Authors: Bettye C Johnson, Steven W Brown, Howard W Yoon
Abstract: In 1996, the National Institute of Standards and Technology (NIST), with the support of the National Atmospheric and Oceanic Administration (NOAA), designed and built two single channel, dual mode radiometers. The radiometers are used to assess the a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841507

73. Radiometric Calibration History of Visible and Near Infrared Portable Radiometers
Published: 1/1/2000
Authors: Bettye C Johnson, Steven W Brown, Howard W Yoon
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103898

74. Radiometric Calibration History of Visible and Near-Infrared Portable Radiometers
Published: 9/1/2000
Authors: Bettye C Johnson, Steven W Brown, Howard W Yoon
Abstract: The National Institute of Standards and Technology (NIST), with the support of the National Aeronautics and Space Administration (NASA), has built several transfer radiometers that are used in radiometric measurement comparisons to validate spectral- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841411

75. Radiometric Characterization of Field Radiometers in Support of the 1997 Lunar Lake, Nevada, Experiment to Determine Surface Reflectance and Top-of-Atmosphere Radiance
Published: 9/1/2001
Authors: Steven W Brown, Bettye C Johnson, Howard W Yoon, James J. Butler, R Barnes, S F Biggar, P R Spyak, Kurtis J Thome, E F Zalewski, M Helmlinger, C J Bruegge, S Schiller, G Fedosejevs, R Gauthier, S Tsuchida, S Machida
Abstract: A continuing series of field campaigns to Lunar Lake, Nevada, has been established for the development of ground-truth measurement protocols and assessment of measurement uncertainties for the ground-based calibration of on-orbit satellite sensors. I ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841334

76. Radiometric Measurement Comparisons Using Transfer Radiometers in Support of the Calibration of NASA's Earth Observing System (EOS) Sensors
Published: 9/1/1999
Authors: James J. Butler, Bettye C Johnson, Steven W Brown, Howard W Yoon, R Barnes, B L Markham, S F Biggar, E F Zalewski, P R Spyak, J W Cooper, F Sakuma
Abstract: EOS satellite instruments operating in the visible through the shortwave infrared wavelength regions (from 0.4 um to 2.5 um) are calibrated prior to flight for radiance using integrating spheres at a number of instrument builder facilities. The trac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841386

77. Radiometric Measurement Comparisons Using Transfer Radiometers in Support of the Calibration of NASA's Earth Observing System (EOS) Sensors, ed. by P.N. Slater
Published: 1/1/1999
Authors: James J. Butler, B L Markham, Bettye C Johnson, Steven W Brown, Howard W Yoon, R A Barnes, S F Biggar, E F Zalewski, P R Spyak, F Sakuma, Jill Cooper
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104352

78. Realization of the National Institute of Standards and Technology Detector-Based Spectral Irradiance Scale
Published: 10/1/2002
Authors: Howard W Yoon, Charles E Gibson, P Y. Barnes
Abstract: A detector-based spectral irradiance scale has been realized at the National Institute of Standards and Technology. Unlike the previousNIST spectral irradiance scales, the new scale is generated using filter radiometers calibrated for absolute spect ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841604

79. SP250 Spectral Irradiance Calibrations
Series: Special Publication (NIST SP)
Report Number: 250-89
Published: 7/25/2011
Authors: Howard W Yoon, Charles E Gibson
Abstract: This document describes the process of the realization, the maintenance and the dissemination of the spectral irradiance scale and its accompanying uncertainties at the National Institute of Standards and Technology. It describes the measurement pro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907923

80. SSE- and Noise-Optimized InGaAs Radiation Thermometer
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson, V B Khromchenko, George P Eppeldauer
Abstract: For the measurements of radiance temperatures in the range from 150 ?C to 1000 ?C, low uncertainties in the temperature measurements can be achieved by using near-infrared InGaAs radiation thermometers. We describe the design and construction of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841126



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