THE OPTIMAL CHOICE OF MULTIELEMENT PHOTODETECTOR WHEN DESIGNING SPECTRORADIOMETER FOR MEASUREMENT OF PHOTOSYNTHETIC ACTIVE RADIATION
Annotation
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.
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