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Information × Registration Number 0213U000708, 0112U003622 , R & D reports Title Chlorophyll remote sensing from the vegetation reflectance spectra with the account to the atmospheric optical state popup.stage_title Head Kochubey S.M., Registration Date 11-03-2013 Organization Institute of Plant Physiology and Genetics NASU popup.description2 Spectrometry was performed with field spectrometer on crops with different plant density, with 4 winter wheat cultivars on black and sandy soil and derivative vegetation indices were calculated. It is shown that the error in the value of vegetation index in repeated measurements of the same fragment of crop less than 4% for all variants of crops. Was established that indicated error was caused by rapid changes in the architectonics of planting in time intervals between repeated measurements. Recording of reflection spectra was performed in different atmospheric humidity. Analysis of vegetation reflectance spectrum forms in far red region shows that bands of atmospheric gases - oxygen and water vapor appear in this region. Their intensity increases with increasing of atmospheric humidity. It is shown that these bands affect the slope of the spectral curve in the areas of spectra where parameters for calculating of derivative indices in chlorophyll estimation obtain. Mathematical approaches to reduce errors caused by the influence of atmosphere are developeing. Product Description popup.authors Бондаренко О.Ю. Петрушевська В.Н. Туменок Л.В. Шевченко В.В. popup.nrat_date 2020-04-02 Close