A 400 nm to 2500 nm absolute spectral radiance comparison using filter radiometers

Citation
Hw. Yoon et al., A 400 nm to 2500 nm absolute spectral radiance comparison using filter radiometers, METROLOGIA, 35(4), 1998, pp. 563-568
Citations number
11
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
METROLOGIA
ISSN journal
00261394 → ACNP
Volume
35
Issue
4
Year of publication
1998
Pages
563 - 568
Database
ISI
SICI code
0026-1394(1998)35:4<563:A4NT2N>2.0.ZU;2-X
Abstract
An integrating-sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Ins titute of Standards and Technology (NIST), resulting in values of spectral radiance in the 400 nm to 2500 nm spectral region. The spectral radiance of the MTL sphere source was then measured using three filter radiometers, al so NIST-traceable, that were developed for the Earth Observing System (EOS) . In the visible and near-infrared, the values from two Si-photodiode filte r radiometers and the supplied calibration values agree within their mutual uncertainties, but in the short-wave infrared, the agreement between the f ilter-radiometer results and the calibration values is less satisfactory. T he reason for this discrepancy is not understood, and additional measuremen ts should be performed.