At present, there is an increasing role of aerospace information technology, based on the use of radio engineering systems in the microwave range of radio waves, in solving the problems of environmental protection, in particular in assessing the biological and ecological state of the boreal forests of the planet. An electrophysical model of the forest canopy is required to adequately assess the state of the forest cover based on aerospace sensing data. Experimental results of ultra-wideband radar sensing of the "reference scene" of larch forest canopy, which can become the initial data for the construction of the forest canopy electrophysical model, are described.