Exploring the relevance of the contents loaded in site Russian federation National atlas is considered in the article. Its attendance and the provided data’s importance for the period of the recent 7 years are analyzed. This analysis made a background for the author on renovation of the resource. During the research some foreign experience on creating printed and digital national atlases was studied. Basing on the modernization results the change in activities of the users was noted in comparison with their previous ones. The research shows that the site has been functioning for fifteen years already, and the information provided still remains relevant. Due to connecting the domain .ru the renovated resource became more easily available for foreign audience. In the period of the Russian Federation digital transformation the National atlas site (nationalatlas.ru) with its updated contents can make a part of the National spatial data system.
A comparative analysis of the remote sensing data, obtained by spacecrafts “Canopus-V” and “Aist-2D”, in terms of determining their actual spatial resolution – the smallest linear size of the terrain object that can be transmitted by the image. Within the researches of studied space imagery structural transfer properties the calculations of their general and local contrast for different types of underlying surface were performed. In particular, it was shown, that despite the smaller ground sampling interval (GSI), images, obtained by “Aist-2D”, are comparable in their structural transfer characteristics to the images of “Canopus-V” because of the greater blurring. However, “Canopus-V” images have a disadvantage – the artifacts due to direct solar reflection from smooth (mirror) surfaces, which “Aist-2D” images do not have. Basing on the obtained values of structural transfer characteristics and the requirements of the Instructions on photogrammetric work for digital topographic maps and plans creation, the mapping scale, corresponding the attainable accuracy of measurements, made by images, obtained by spacecrafts “Canopus-V” and “Aist-2D”, is determined. The conclusions about the comparability of considered space imagery structural transfer characteristics, the advantages and disadvantages in terms of their photographic quality, as well as the possibility of their use for mapping purposes are formulated.
The article deals with development of new spectral method for determination of spectral indices used to estimate the soil moisture content. The main disadvantage of such indices is that they use spectral absorption lines of water vapor. Consequently, using them requires adequate compensation of the atmospheric influence. The solution of this issue was carried out on the basis of the following provisions
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