Results 61 to 70 of about 21,471 (126)

Proceedings of the Interdisciplinary Workshop on Vertical Radiometric Probing [PDF]

open access: yes
Rayleigh and Mie scattering, passive microwave radiometry, and linear and nonlinear inversion methods for inferring atmospheric thermal structure from satellite ...
Florance, E. T.
core   +1 more source

Microwave cryogenic thermal-noise standards [PDF]

open access: yes, 1971
Field operational waveguide noise standard with nominal noise temperature of 78.09 plus/minus 0.12 deg K is calibrated more precisely than before. Calibration technique applies to various disciplines such as microwave radiometry, antenna temperature and ...
Stelzried, C. T.
core   +1 more source

Millimeter wave radiometry as a means of determining cometary surface and subsurface temperature [PDF]

open access: yes
Thermal emission spectra for a variety of cometary nucleus models were evaluated by a radiative transfer technique adapted from modeling of terrestrial ice and snow fields.
Brandt, J. C.   +2 more
core   +1 more source

In-flight radiometric calibration of the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) [PDF]

open access: yes
A reflectance-based method was used to provide an analysis of the in-flight radiometric performance of AVIRIS. Field spectral reflectance measurements of the surface and extinction measurements of the atmosphere using solar radiation were used as input ...
Alley, Ronald E.   +9 more
core   +1 more source

Advances in Solar Radiometry

open access: yes, 2014
Total solar irradiance (TSI) is a key input parameter for the climate system on earth. Continuous and reliable monitoring as well as the knowledge of the absolute TSI value is therefore crucial for understanding reconstructing and eventually forecasting our climate on earth.
openaire   +2 more sources
Some of the next articles are maybe not open access.

Ultraviolet radiometry with synchrotron radiation and cryogenic radiometry

Applied Optics, 1999
The combination of a cryogenic radiometer and synchrotron radiation enables detector scale realization in spectral regions that are otherwise difficult to access. Cryogenic radiometry is the most accurate primary detector-based standard available to date, and synchrotron radiation gives a unique broadband and continuous spectrum that extends from x ray
J L. Dehmer   +8 more
openaire   +3 more sources

Interferometry and radiometry

Journal of the Optical Society of America A, 1997
A general connection between interferometry and radiometry is studied on the basis of a new relationship between Walther’s first generalized radiance function and the mutual coherence function for polychromatic fields. New results include a definition of the generalized radiance function that is valid even for nonstationary fields and a principle of ...
Kazuyoshi Itoh, Kyu Yoshimori
openaire   +2 more sources

Normalization in Radiometry

Applied Optics, 1973
When the absolute value X = ?Xmicro(micro).dmicro of incident radiation cannot be obtained from the output V = ?Xmicro(micro) R(x)(micro) dmicroof a selective instrument, with nonuniform responsivity R(x)(micro) = V(micro)(micro)/X(micro)(micro), because the incident distribution X(micro),(micro) is not known, recourse is had to various normalization ...
openaire   +3 more sources

A primer on radiometry

Dental Materials, 2005
Correctly measuring radiometric quantities and reporting radiometric data is essential in developing a more complete understanding of the requirements and polymerization kinetics of dental resin composites. Presented herein is an introduction to the fundamental concepts, quantities and units of radiometry.
openaire   +3 more sources

Radiometry and coherence

Journal of the Optical Society of America, 1968
The basic laws of photometry are derived from the theory of partial coherence by considering a generalized form of the Van Cittert–Zernike theorem.
openaire   +2 more sources

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