Results 121 to 130 of about 270 (136)

Hyperspectrometer for the 900–1700  nm near-infrared region

Journal of Optical Technology, 2017
We describe a short-wavelength infrared (900–1700 nm) hyperspectrometer for a variety of pure and applied research applications involving the environment, remote Earth sensing, agricultural/forest monitoring, etc. This spectrometer can be used in the laboratory, in ground-based applications, and from aircraft.
A. N. Vinogradov, V. V. Egorov, A. P. Kalinin, A. I. Rodionov, I. D. Rodionov   +4 more
openaire   +1 more source

Hyperspectrometer based on curved prism fabrication for space application

Optical Fabrication, Testing, and Metrology VI, 2018
High resolution and large relative aperture have been urgent demands for the development of spectrometer. A design method of freeform was presented based on offner structure, The design of large relative aperture was realized by multi variables of freeform surface, the energy of system was doubled.
Lei Yang, Yacan Li, Lei Feng, Lidong Wei, Juanjuan Jing, Jinsong Zhou   +5 more
openaire   +1 more source

Diffraction axicon as the dispersive element for imaging hyperspectrometer

SPIE Proceedings, 2016
In this paper, a modeling of the hyperspectrometer using a diffraction axicon as a dispersive element was carried out. It was also proved that a point spread function of such optical system remains almost unchanged on the image pattern, when the width is comparable to the PSF of the hyperspectrometer based on conventional diffraction grating.
Roman V. Skidanov, Veronika A. Blank
openaire   +1 more source

Method for Calculating the Instrument Function of a Medical Hyperspectrometer

Herald of the Bauman Moscow State Technical University. Series Instrument Engineering, 2022
Hyperspectral imaging technology offers great opportunities in noninvasive disease diagnostics and scientific research. Medical hyperspectrometer operation is based on the light ability to be reflected from biological tissue and depends on how strongly the tissue absorbs/reflects the light.
openaire   +1 more source

Experimental study of optical characteristics of a satellite-based Offner hyperspectrometer

Optical Technologies in Telecommunications 2017, 2018
A hyperspectrometer based on the Offner scheme was investigated. Spectral characteristics were studied and calibrated using a standard spectrometer. As a result of estimating the deviations of the spectra of the imaging hyperspectrometer and the reference spectrometer, calibration coefficients were obtained. The reflectance spectra of beets, onions and
Vladimir Fursov, Roman Skidanov, Maksim Petrov, Artem Nikonorov, Vladimir Podlipnov, Andrey Morozov, Nikolay Kazanskiy   +6 more
openaire   +1 more source

Formation of contrast images of specified objects by acousto-optic hyperspectrometer by selective spectral registration

Optics and Spectroscopy, 2022
The method of selecting the most informative spectral channels when using an acousto-optic hyperspectrometer in the mode of selective spectral registration is presented. The developed technique makes it possible to select spectral channels in which the maximum contrast of objects is observed against a certain background, provided that their ...
null Machikhin A.S., null Pozhar V.E., null Samoylin E.A., null Shipko V.V.   +3 more
openaire   +1 more source

Sensitivity of the satellite thermal infrared hyperspectrometer to variations of atmospheric characteristics

23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2017
The sensitivity of satellite thermal infrared hyperspectrometer readings to variations of the atmospheric gas constituent amounts is considered. It is shown that the differential sensitivity coefficients of the instrument channels to variations in the density of the gas of interest is expressed through the mass absorption coefficient of this gas and an
Zohir Sarmisokov, Anatoly Lagutin, Egor Mordvin   +2 more
openaire   +1 more source

A line of aviation hyperspectrometers in the UV, visible, and near-IR ranges

Journal of Optical Technology, 2016
This paper briefly describes a line of hyperspectral sensors fabricated by ZAO Reagent Scientific Manufacturing Center. These devices are comparable to other countries’ products in their main characteristics (spatial and spectral resolution—0.3 m from an altitude of 1 km and 0.2 nm in the blue–green region, respectively—up to 500 spectral channels, and
A. N. Vinogradov, V. V. Egorov, A. P. Kalinin, A. I. Rodionov, I. D. Rodionov   +4 more
openaire   +1 more source

Simulation of spectral filters used in hyperspectrometer by decomposition on vector Bessel modes

SPIE Proceedings, 2015
The article is devoted to hyperspectrometer modeling based on the use of filters with linearly varying parameters. The point spread function depending on the spectral filter parameters is estimated. The results were obtained by decomposition of the incident radiation on vector Bessel modes.
N. L. Kazanskiy, S. I. Kharitonov, S. N. Khonina, S. G. Volotovskiy   +3 more
openaire   +1 more source

Pre-launch Calibration of the Tiangong-2 Front-Azimuth Broadband Hyperspectrometer

2018
The Front-Azimuth Broadband Hyperspectrometer was launched on board the Tiangong-2 Space Laboratory on 15 Sep 2016 and had successfully measured spectral radiance of Earth limb atmosphere, to provide profiles of the volumetric concentration of ozone, nitrogen dioxide and other minor trace gases.
Zhanfeng Li, Shurong Wang, Yu Huang, Qingjun Ma, Qingsheng Xue, Zhigang Li   +5 more
openaire   +1 more source