Remote assessment of the ecological state of water bodies based on the multidimensional density distribution of biotope areas on the example of the Kyiv reservoir

Fedorovskyi, O.D.; Zub, L.; Dyachenko, T. N.; Tomchenko, Оlha; Khyzhniak, A.V.; Yakymchuk, Vladyslav

doi:10.15407/knit2020.05.038

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…Для оцінки антропогенних і природних змін земного покриву досить часто використовуються архівні супутникові знімки, отримані за допомогою оптико-механічних сканерів [7,13,20]. Відмінною рисою таких знімків є різні приладові геометричні та радіометричні завади та спотворення.…”

Section: формулювання проблемиunclassified

Method of Automated Correction of Instrument Distortions on Landsat-7 Multispectral Satellite Images

Bilousov¹,

Nechyporuk²,

Khoroshylov³

et al. 2022

Kosm. nauka tehnol.

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An alternative method of automated correction of instrumental distortions of the ETM + scanner on Landsat-7 multispectral satellite images is proposed. The method is based on the application of filtering in the field of spatial frequencies using fast Fourier transform and spectral masks. The parameters of the mask are determined by a known spatial period of interference or experimentally by the results of the filtration. To filter the area of spatial frequencies to be removed, a filtering mask is applied, consisting of pixels with zero values. Periodic components whose spatial period corresponds to the spatial frequencies filtered on the Fourier image will be removed from the filtered image. The quality of filtration is determined by the mask used. When using multispectral images, a filter mask based on the Fourier image of one of the spectral channels is applied to filter other channels. The results of visual analysis of the processed images showed a fairly high-quality correction and elimination of instrumental distortions of the ETM + scanner in comparison with other methods. The main advantages of the proposed method are the next: the ability to work without the use of metadata and masks of instrumental distortion; work with single-channel and multispectral images; ability to work with small fragments of the scene; minimum number of manual settings for processing procedures; possibility to work without additional pictures for other dates; high stability of the used algorithms when using images from different satellites; fairly good repeatability of the results on satellite images taken in different seasons and for different areas. Experimental testing of the proposed method on a large number of images also confirmed the good repeatability and high stability of the algorithms used. It is expected that the developed technology will also be successfully used to cor

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Section: формулювання проблемиunclassified

Method of Automated Correction of Instrument Distortions on Landsat-7 Multispectral Satellite Images

Bilousov¹,

Nechyporuk²,

Khoroshylov³

et al. 2022

Kosm. nauka tehnol.

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Simulation mathematical modeling of hydroecological monitoring of water resources using space images of the Earth

Yakymchuk

2022

UJRS

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Modeling of aquatic ecosystems is the basis for solving many practical problems. These problems are related to increasing the productivity of water bodies, improving the quality of water in them and the implementation of water protection measures in catchment areas. The study is based on the integration of materials from space images of the Earth and terrestrial values of the ecological index of water quality to assess the state of aquatic ecosystems, which provides sufficient data to assess the parameters of water pollution. The issues of construction of resource-oriented scenarios of nature management based on the balance of water consumption and reproduction are considered. The role and place of mathematical modeling in the system of ecological monitoring are shown, namely that the information technology of process scenario management allows to maintain the balance of water consumption and reproduction of water resources. Integrated dynamic models of Kyiv Reservoir systems have been built, focused on establishing a balance of water consumption and reproduction. A systematic approach was used to build the models, in which the economic goals of water consumption are made dependent on the ecological state. In accordance with the principle of dynamic balance, which postulates the desire of a complex system to dynamic equilibrium with variable external forces, the creation of the method proposed a universal model of adaptive balance of the system of interdependent processes. As an example of using a systematic management methodology, consider the problem of finding a balance between the volume of water consumption and the volume of their reproduction. This balance, maintained through environmental measures, is represented by a conceptual model of the ecological and economic system. Simulation experiments with the model of adaptive balance of water resources impacts were performed. The main advantage of such computer control technologies is the wide possibility to carry out simulation experiments and choose from an ensemble of possible process scenarios that meet the target guidelines for sustainable development.

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On the development of remote sensing methods and technologies in Ukraine

Lyalko

Popov

Sedlerova

et al. 2022

UJRS

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This article is focused on analyzing the results of scientific researches of the Scientific Centre for Aerospace Research of the Earth of the Institute of Geological Science of the National Academy of Sciences of Ukraine. The article briefly describes the development of aerospace research of the Earth in Ukraine and the role of the Centre in remote sensing research carried out by institutions of the National Academy of Sciences of Ukraine. The history of the Centre, its scientific schools and main areas of research are presented, the prospects for further development are outlined. Data of the organizational structure of the Centre and the achievements of the scientific team are represented. The contribution of employees of the Centre for the development of aerospace research in Ukraine is analyzed. The international activities of the Centre and its employees are presented. Further prospects for the development of research in the field of remote sensing in Ukraine are considered. It is noted that the strategy of research development will be set to implement the basic principles of world community, defined by UN decisions on sustainable development of humanity. It is noted that the development of novel effective methods and technologies based on using aerospace data and computer modeling of energy and mass exchange processes in the Earth geospheres will play a significant role in the solving this problem. The implementation of these methods and technologies will contribute to satisfaction the economic, defense and social needs of Ukraine, taking into account the fundamental program of postwar restoration and reconstruction of the national economy of Ukraine.

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Remote assessment of the ecological state of water bodies based on the multidimensional density distribution of biotope areas on the example of the Kyiv reservoir

Cited by 3 publications

References 1 publication

Method of Automated Correction of Instrument Distortions on Landsat-7 Multispectral Satellite Images

Method of Automated Correction of Instrument Distortions on Landsat-7 Multispectral Satellite Images

Simulation mathematical modeling of hydroecological monitoring of water resources using space images of the Earth

On the development of remote sensing methods and technologies in Ukraine

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