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You searched on: Author: steven brown

Displaying records 21 to 30 of 153 records.
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21. Measurement science for climate remote sensing
Published: 8/20/2008
Authors: Gerald T Fraser, Steven W Brown, Raju Vsnu Datla, Bettye C Johnson, Keith R. Lykke, Joseph Paul Rice
Abstract: The Earth s climate is very complex and highly variable, making it difficult to measure and model small changes that occur over decadal and longer time scales. The resulting uncertainties in measurement and modeling underlie the longterm debate over ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842531

22. Dynamically Programmable Digital Tissue Phantoms
Published: 12/31/2007
Authors: Steven W Brown, Joseph Paul Rice, David W Allen, Maritoni Abatayo Litorja, Karel Zuzak, Edward Livingston
Abstract: As optical imaging modalities gain acceptance for medical diagnostics and become common in clinical applications, standardized protocols to quantitatively assess optical sensor performance are required to ensure commonality in measurements and to val ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905502

23. Characterization of Earth-Observing Satellite Instruments for Response to Spectrally and Spatially Variable Scenes
Published: 12/3/2007
Authors: Steven W Brown, Bonnie Myers, R Barnes, Joseph Paul Rice
Abstract: In this work, we present a radiometric platform for the development of application-specific metrics to quantify the performance of sensors and systems viewing realistic spectral and spatial scenes. There are two components to the platform, both base ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841120

24. Characterization and Correction of Stray Light in Optical Instruments
Published: 11/1/2007
Authors: Yuqin Zong, Steven W Brown, G Meister, R Barnes, Keith R. Lykke
Abstract: Improperly imaged, or scattered, optical radiation within an instrument is difficult to properly characterize and is often the dominant residual source of measurement error. Scattered light can originate from the spectral components of a point sour ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841127

25. The Marine Optical BuoY (MOBY) Radiometric Calibration and Uncertainty Budget for Ocean Color Satellite Sensor Vicarious Calibration
Published: 11/1/2007
Authors: Steven W Brown, S Flora, M Feinholz, M Yarbrough, Terrance Houlihan, D Peters, Yong S. Kim, J Mueller, Bettye C Johnson, Dennis Clark
Abstract: For the past decade, the Marine Optical Buoy (MOBY), an autonomous radiometric buoy stationed in the waters off Lanai, Hawaii, has been the primary in-water oceanic observatory for the vicarious calibration of U. S. satellite ocean color sensors, inc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841136

26. Evaluation of a Portable Hyperspectral Imager for Medical Imaging Applications
Published: 10/2/2007
Authors: David W Allen, Maritoni Abatayo Litorja, Steven W Brown, Joseph Paul Rice, Yuqin Zong
Abstract: Portable hyperspectral imagers are becoming commonly available as a commercial product. A liquid crystal tunable filter based CCD imager was evaluated and characterized for spectral stray light using a tunable laser facility. The hyperspectral imag ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841115

27. A Hyperspectral Image Projector for Hyperspectral Imagers
Published: 9/3/2007
Authors: Joseph Paul Rice, Steven W Brown, Jorge Enrique Neira, Robert R. Bousquet
Abstract: We have developed and demonstrated a Hyperspectral Image Projector (HIP) intended for system-level validation testing of hyperspectral imagers, including the instrument and any associated spectral unmixing algorithms. HIP, based on the same digital ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841091

28. Correction of Stray Light In Spectroradiometers and Imaging Instruments
Published: 7/4/2007
Authors: Yuqin Zong, Steven W Brown, Keith R. Lykke, Yoshihiro Ohno
Abstract: Measurement errors from stray light, spectral or spatial, are inevitable and are often the dominant source of error in spectroradiometers and imaging radiometers/photometers. We have developed a simple matrix method for correcting spatial stray light ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841072

29. Comparison of absolute spectral irradiance responsivity measurement techniques using wavelength-tunable lasers
Published: 6/20/2007
Authors: V Ahtee, Steven W Brown, Thomas C Larason, Keith R. Lykke, E and Noorma Ikonen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101543

30. Thermodynamic-Temperature Determinations of the Ag and Au Freezing Temperatures Using a Detector-Based Radiation Thermometer
Published: 5/20/2007
Authors: Howard W Yoon, David W Allen, Charles E Gibson, Maritoni Abatayo Litorja, Robert D. Saunders, Steven W Brown, George P Eppeldauer, Keith R. Lykke
Abstract: We describe the development of a radiation thermometer calibrated for spectral radiance responsivity using cryogenic, electrical-substitution radiometry to determine the thermodynamic temperatures of the Ag- and Au-freezing temperatures. The absolut ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840978



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