A method for building land cover maps of large areas using time series of optical and radar satellite data, which has a stage of pre-processing of satellite data, a classification stage for building land cover maps using a classification algorithm(s). To create a map, after the data preprocessing stage, the data restoration operation is performed in the cloudy areas of the optical images (for example, using an algorithm based on Kohonen self-organizing maps), and after the classification stage, the operation of pixel-by-pixel data fusion (pixel-by-pixel classification results) is performed at the intersection of the images by forming the resulting Imres image.

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