Zobrazeno 1 - 10
of 12
pro vyhledávání: '"A. M. Liudchik"'
Autor:
A. M. Liudchik
Publikováno v:
Journal of Applied Spectroscopy. 82:809-815
A procedure is proposed for determining the composition of a medium by photometry of the radiation passing through it when the recording instrument has insufficient spectral resolution. The effectiveness of the procedure is illustrated using model ex
Publikováno v:
Journal of Applied Spectroscopy. 82:125-130
The distinguishing feature of our optical open-path analyzer for measuring near-surface ozone concentration is the use of interference filters for isolating individual narrow bands in the UV absorption spectrum of ozone plus a “solar-blind” photo
Autor:
A. M. Liudchik
Publikováno v:
Journal of Applied Spectroscopy. 80:939-944
The basic ideas of the technique of orthogonal optical absorption spectroscopy are illustrated with a simple example employing a vector representation of the functions of wavelength.
Autor:
A. M. Liudchik
Publikováno v:
Journal of Applied Spectroscopy. 80:82-88
The theoretical basis of differential optical absorption spectroscopy (DOAS) is examined and the conditions for applicability of the method are determined. Support is provided for the more general method of orthogonal optical absorption spectroscopy
Publikováno v:
Journal of Applied Spectroscopy. 79:801-807
The use of interference filters in UV photometric instrumentation is discussed with the features of the spectral distribution of solar radiation taken into account. In particular, special attention is paid to the problem of reducing the transmission
Publikováno v:
International Journal of Remote Sensing. 34:374-386
A great number of geophysical instruments based on measurements of direct solar radiation are used for monitoring of and research into atmospheric composition. One of the necessary requirements for the correct operation of such instruments is to prov
Autor:
A. M. Liudchik
Publikováno v:
Journal of Applied Spectroscopy. 79:477-483
A multiwavelength technique for open-path spectrophotometric measurements of the concentrations of the principal constituents of the atmosphere is presented. It uses a standard least squares procedure to minimize deviations of the calculated optical
Publikováno v:
International Journal of Remote Sensing. 31:523-529
The multiwave differential optical absorption spectroscopy (DOAS) technique is normally applied to obtain information on a few gas components in a mixture, as well as to reduce errors while evaluating their concentrations. Multiwave measurements also
Autor:
A. N. Krasouski, A. M. Liudchik
Publikováno v:
International Journal of Remote Sensing. 31:323-328
An improved version of the Langley method is presented based on a recently developed variation method for the extraterrestrial parameter calibration of the spectrophotometers that perform column ozone observations. Special attention is given to the c
Publikováno v:
Applied Optics. 56:7702
A rigorous theoretical description of the standard spectrophotometric method for determining medium composition is given using a vector representation of measured signals. Further modifications, methods of orthogonal optical absorption spectroscopy (