Comparison of the information power of multispectral imaging and high-resolution spectroscopy in the remote sounding of vegetation cover
|1Kochubei, SM |
1Institute of Plant Physiology and Genetics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
|Kosm. nauka tehnol. 1999, 5 ;(2):41–48|
|Section: Study of the Earth from Space|
|Publication Language: Russian|
Imitation models were used to study the distortions in the chlorophyll content estimates calculated from reflectance spectra of pumpkin leaves depending on some optical parameters of measured sample and parameters of spectral device: proective cover, soil reflectance, the level of chlorophyll concentration in leaves, light filter characteristics (half-width, passband profile, intensity at maximum, signal-to-noise ratio). These results were compared to those obtained with spec-tometers with high spectral resolution. The accuracy of chlorophyll estimates with multispectral devices is shown to be very sensitive to optical heterogeneity of objects and tolerant to the level of high frequency noises. The information obtained with spectrometers of high spectral resolution is sensitive to noise level, spectral resolution, and algorithm of data treatment. The deviations of calculated chlorophyll concentrations from those determined by the chemical method depend on proective cover, soil reflectance, and chlorophyll concentration in measured leaves.
|Keywords: chlorophyll, imitation models, remote sounding|
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