Results 251 to 260 of about 53,616 (283)

A Versatile Spectroradiometer and Its Applications

Applied Optics, 1967
A spectroradiometer is described which is designed to make measurements of spectral radiance, irradiance, transmittance, and reflectance. In one minute the Hilger D300 monochromator is set to the next wavelength to be measured and a measurement is made of (a) the dark current of the photomultiplier, (b) the photocurrent produced by the reference source,
Sanders, C. L., Gaw, W.
openaire   +2 more sources

An Airborne Spectroradiometer*

Journal of the Optical Society of America, 1960
A system is described for acquiring spectroradiometric data concerning objects in space from an airborne platform. The system operates in the 0.25 to 15-μ spectral region; large collecting optics, precise optical tracking, and background discrimination in the entrance optics permit the acquisition of high resolution and sensitivity.
L. G. Mundie, D. E. Brown, P. G. Hasell, D. S. Lowe   +3 more
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LOW COST DIGITAL SPECTRORADIOMETER*

Photochemistry and Photobiology, 1989
Abstract— A self‐made low cost digitized single beam spectroradiometer is described. It is designed and calibrated to measure spectral radiant intensities in one nanometer steps for bandwidths between 1 and 20 nm within the wavelength range 200–1100 nm.
WOLFGANG F. KAUFMANN, KARL M. HARTMANN
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Automatic Recording Spectroradiometer System

Applied Optics, 1971
A versatile, mobile, automatic recording spectroradiometer of high precision and accuracy has been developed. The instrument is a single-beam device with an alternate reference beam intended primarily for measurements of spectral irradiance. However, it is equally useful for measurement of spectral radiance, transmittance, or reflectance. The system is
openaire   +2 more sources

DYNAMIC RESPONSE OF CCD ARRAY SPECTRORADIOMETERS

Radiation Protection Dosimetry, 2015
A number of factors affect the measurements by charge coupled (CCD) array spectroradiometers, including stray light, dynamic response and ambient temperature. The departure from linearity was assessed for four CCD array spectroradiometers and linearity correction calculated with standard uncertainties error estimates.
Katarzyna Anna, Baczynska, Luke L A, Price, Marina, Khazova   +2 more
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Autonomous field spectroradiometers

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
In field spectroscopy applications the autonomous field spectroradiometer is configured to measure the down-welling irradiance and up-welling radiance, from this it is possible to calculate the reflectance properties of the surface or canopy and how it may change over time and with illumination geometry. This paper reviews the merits and limitations of
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High-speed spectroradiometer for remote sensing

Applied Optics, 1987
A high-speed spectroradiometer designed for spectral reflectance measurement in remote sensing is described. This instrument uses a monochromatic grating and a photomultiplier system for light detection and sweeps over the 400-850-nm wavelength spectral range with the spectral resolution of 2 nm within 1 s.
T, Miyazaki, H, Shimizu, Y, Yasuoka
openaire   +2 more sources

Staring infrared imaging spectroradiometer

SPIE Proceedings, 1995
A design approach for developing a staring-dispersive infrared imaging spectroradiometer utilizing a fiber-optic image formatter to simultaneously capture, at rates greater then 100 Hz, 256 high-resolution spectral images of a 2D scene is described. Detailed performance analyses confirm that the spectral radiance within the image scene can be measured ...
James B. McGlynn, Garth L. Gerber, David L. Perry, Joseph C. Marron, Michael F. Reiley, M. C. Dudzik   +5 more
openaire   +1 more source

Autonomous three channel spectroradiometer

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Above water reflectance measurements are usually made laboriously with handheld sensors. In recent years, autonomous robotic systems or fixed spectro-radiometers are used. In this work, we used off-the shelf optical systems with standard netbooks to make autonomous measurements of water reflectance.
C. W Chang, L. Char, J.H Wong, J.E Zhuang, B. Saengtuskin, Amos C. N Goh, S.C Liew   +6 more
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Balloonborne Far-Ir Spectroradiometer

SPIE Proceedings, 1987
Pronaos, a two metre balloonborne submillimetre telescope, supported by CNES and designed by a French collaboration between CNRS institutes and CNES-CST is presented. This project is now approved and in a preliminary definition phase B. It is intended to provide a facility for long duration flights (more than 20 hours) for photometry and spectroscopy ...
G. Serra, G. Bellaiche, P. Encrenaz, J. M. Lamarre   +3 more
openaire   +1 more source