ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)

vol 63 / September, 2020

DOI 10.17586/0021-3454-2018-61-9-761-770

UDC 681.785.55


S. S. Baev
ITMO University, Department of Optical-Electronic Devices and Systems; TKA Scientific Instruments; Post-Graduate Student, Engineer

V. V. Korotaev
ITMO University, SaintPetersburg, 197101, Russian Federation; Department head

V. N. Kuzmin
TKA Scientific Instruments, Department of Optics and Photometry; Professor, Deputy Director for Optics and Photometry

K. A. Tomsky
TKA Scientific Instruments; Professor, Director General

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Abstract. The problems of developing a spectroradiometer to be included into a system of automated control over devices for irradiating plants grown under conditions of a closed ground are discussed. The spectro-radiometer is designed to provide the optimal irradiation regime for plants and must be accurate enough and have low cost. The error of the spectroradiometer due to the discrete nature of the multielement photodetector and the ratio of the half-width of the monochromatic image of the spectroradiometer slit to the distance between the detector elements is considered. The results of an experiment performed with commercially available multielement optical detectors with different size of sensitive elements for various widths of monochromatic image of the polychromator input slit are presented.  
Keywords: optical-electronic system, polychromator, multielement photodetector, non-excluded error

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