Zobrazeno 1 - 7
of 7
pro vyhledávání: '"V. W. Nelson"'
Publikováno v:
Metrologia. 30:259-264
Historically, flat-plate diffusers of measured angular scattering properties are illuminated by NIST standards of spectral irradiance to provide a calculated spectral radiance standard in the wavelength region 250 nm to 340 nm for space-borne SBUV-2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a37ae14999311d160c821d701e78edb
https://doi.org/10.1088/0026-1394/30/4/008
https://doi.org/10.1088/0026-1394/30/4/008
Autor:
W K Fowler, V W Nelson
Publikováno v:
Metrologia. 30:255-257
Characteristics of three diffuser materials used in the radiometric calibration of the SBUV-2 are compared. Data on reflectance, BRDF, uniformity and stability are presented and their effect on calibration discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90c88ff2d19733aeeba3469a23552fff
https://doi.org/10.1088/0026-1394/30/4/007
https://doi.org/10.1088/0026-1394/30/4/007
Autor:
Zongying Wei, Donald F. Heath, Ernest Hilsenrath, Scott J. Janz, Roel Hoekstra, William K. Fowler, Carina Olij, V. W. Nelson
Publikováno v:
SPIE Proceedings.
Beginning in the mid 1960's large aperture scanning radiometers have been used in space to determine spectroradiometric properties of earth scenes in the red and near infrared regions. Panel diffusers as calibration sources for these radiometers were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd362fbd0387f873dba360ad75c96d23
https://doi.org/10.1117/12.197235
https://doi.org/10.1117/12.197235
Autor:
Donald F. Heath, James J. Butler, V. W. Nelson, William K. Fowler, Zongying Wei, Ernest Hilsenrath
Publikováno v:
SPIE Proceedings.
Spectral radiance calibrations have been made for several SBUV/2 instruments using techniques based upon an internally illuminated spherical integrator and diffuse reflectance panels with BRDF measurements from NIST. Both techniques are referenced to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d0307007ce8c6d549b517e3232dbb63
https://doi.org/10.1117/12.186624
https://doi.org/10.1117/12.186624
Publikováno v:
Space Optics 1994: Earth Observation and Astronomy.
A comparison has been made of spectral radiance calibrations of SBUV-2 instruments using two techniques. In one, a source of spectral radiance is obtained by illuminating a spectralon panel diffuser whose BRDF has been measured by NIST with a 1000 W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27bb765d0f993cebe45645b05bb8cc1d
https://doi.org/10.1117/12.185252
https://doi.org/10.1117/12.185252
Autor:
V W, NELSON
Publikováno v:
Hospitals. 34
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::cad989009a9911b51a9e89f4dab6169e
https://pubmed.ncbi.nlm.nih.gov/14426496
https://pubmed.ncbi.nlm.nih.gov/14426496
Autor:
V W, NELSON
Publikováno v:
Hospitals. 26(5)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::eea08fb9a655086af2febaa753617e84
https://pubmed.ncbi.nlm.nih.gov/14937678
https://pubmed.ncbi.nlm.nih.gov/14937678