A technique for improving the calibration of large-area sphere sourcesA new technique for improving the accuracy of radiance calibrations for large-area integrating-sphere sources has been investigated. Such sources are used to calibrate numerous aircraft and spacecraft remote sensing instruments. Recent measurements performed at NIST and NASA Goddard Space Flight Center have demonstrated that the uncertainty of sphere-source radiance measurements can be improved from the present 5 to 10 percent level to a 1 to 2 percent level. Silicon detectors with bandpass filters mounted in front of them and calibrated for absolute spectral responsivity can be used to confirm and to monitor the absolute radiance of a sphere source.
Document ID
19930039600
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Walker, James H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cromer, Chris L. (NIST Gaithersburg, MD, United States)
Mclean, James T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Calibration of passive remote observing optical and microwave instrumentation; Proceedings of the Meeting, Orlando, FL, Apr. 3-5, 1991 (A93-23575 07-19)
Publisher: Society of Photo-Optical Instrumentation Engineers