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Search Publications by: Yuqin Zong (Fed)

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Displaying 76 - 99 of 99

Simple Spectral Stray Light Correction Method for Array Spectroradiometers

February 20, 2006
Author(s)
Yuqin Zong, Steven W. Brown, Bettye C. Johnson, Keith R. Lykke, Yoshihiro Ohno
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 correct a

Correction of Stray Light in Spectrographs: Implications for Remote Sensing

August 22, 2005
Author(s)
Yuqin Zong, Steven W. Brown, Bettye C. Johnson, Keith R. Lykke, Yoshihiro Ohno
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

Calibrations of Colorimeters for Display Measurements: Some Commercial Colorimeters Have Uncertainties in Display-Color Measurements That Are Too Large for Many Commercial, Industrial and Military Applications - But New NIST-Developed Calibration Proc...

December 1, 1999
Author(s)
Steven W. Brown, Yuqin Zong, Yoshihiro Ohno
Commercial color measuring instruments (colorimeters and spectroradiometers) are currently used in a number of product development and control environments, as well as for product acceptance testing and a variety of other applications. In many cases, the

Detector-Based Integrating Sphere Photometry

June 24, 1999
Author(s)
Yoshihiro Ohno, Yuqin Zong
A new luminous flux calibration facility using a 2.5 m integrating sphere has been developed at NIST. The Absolute Integrating-Sphere Method, developed for realization of the lumen in 1995, has been applied to routine calibration measurements of luminous