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Estimation of the Space–Time Spectrum of Waves Based on Circular Measuring Gratings

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Abstract

In this paper, a method for estimating the spectra of wave processes based on a special type of measuring lattices, which are a set of rotating and static sensors, called “circular,” is developed. A method for correcting spectra estimated on the basis of discrete digital series obtained from circular lattice sensors is described. Spectra estimates are based on the multidimensional maximum entropy method. The data of test calculations for several types of circular lattices are presented as applied to wave processes in the form of harmonics distorted by white noise. The effectiveness of the proposed method for correcting spectra is shown. The general principles of using circular lattices for estimating the spectra of wave processes with the help of sensors located on rotating satellites are outlined. The possibility of using this approach for estimating the spectra of wave processes using sensors installed on micro- and nanosatellites is discussed.

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Funding

The study was financially supported by the Russian Foundation for Basic Research and the Belarusian Republican Foundation for Basic Research within the framework of the scientific project no. 20-58-00018 and partly within the framework of Russian Foundation for Basic Research and project no. 20-02-00280, as well as within the framework of project no. 0777-2020-0018, financed from a state order to the winners of a competition of scientific laboratories of educational organizations of higher education subordinated to the Ministry of Education and Science of Russia in terms of the use of circular measuring lattices in space experiments.

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Correspondence to I. V. Belokonov.

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Belokonov, I.V., Zhuravlev, V.M. & Morozov, V.M. Estimation of the Space–Time Spectrum of Waves Based on Circular Measuring Gratings. Cosmic Res 61, 102–112 (2023). https://doi.org/10.1134/S0010952522700174

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  • DOI: https://doi.org/10.1134/S0010952522700174

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