The most common in agriculture, characterizes the density of vegetation and allows farmers to assess germination, growth, the presence of weeds or diseases, as well as to predict the productivity of the fields. NDVI - normalized difference vegetation index. The calculation of most of the vegetation indices is based on two the most stable sections of the curve spectral reflectance of plants. The effectiveness of vegetation indices is determined by the characteristics of reflection. The vegetation index is an indicator that is calculated as a result of operations with different spectral ranges of remote sensing data and is related to the vegetation parameters in a particular pixel of the image. This indicates the need of additional agricultural work in certain areas, therefore, this technology relates to precision agriculture methods. The difference in the dynamics of the vegetation index indicates imbalances in development within the same culture or field. It is used on different fields or for individual crops and allows you to track the positive and negative dynamics of plant development. Satellite crop monitoring is the technology for observing changes in the vegetation index obtained by spectral analysis of high-resolution satellite images.
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