The article describes the general concepts of radar satellite imagery, possible options for its use in the interests of forestry. Based on the analysis of literary sources, conclusions are drawn about its main advantages over other methods of remote sensing of the Earth. The necessity of wider dissemination of various effective techniques based on radar and other satellite data is substantiated to simplify and increase the efficiency of forest stand assessment, as well as to collect unique precision data, which is impossible under ground conditions. In the southern taiga natural-climatic zone of the Republic of Udmurtia in various forest formations and forest conditions, 25 plots of land have been laid. Typical plantings of the research area have mainly mixed breed composition. The predominant amount of plots of land is found in pine forests and spruce fir forests (36% and 20%, respectively). The rest were distributed in pine forests (blueberries, chickens, broad-grass, tame) and spruce forests (chickens, broad-grass, tame). Middle-aged and maturing plantations account for 48% and 44% of plots of land, respectively. The overripe plantations of pine and spruce formations were not found. Young growths were completely overgrown. Most of the studied stands are located in forest conditions C3 (64% of the amount of PP), D3 (12%), as well as D2, D4 and C4 (8% each). The results of field studies reflect the general dynamics of the distribution of forests in the Republic of Udmurtia in the subzone of southern taiga. The material was prepared for further decoding and development of algorithms for obtaining forest taxation characteristics using radar satellite imagery