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

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 circula...

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Bibliographic Details
Published in:Cosmic research 2023-04, Vol.61 (2), p.102-112
Main Authors: Belokonov, I. V., Zhuravlev, V. M., Morozov, V. M.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Astrophysics and Cosmology
Entropy
Estimation
Lattices
Maximum entropy
Maximum entropy method
Nanosatellites
Physics
Physics and Astronomy
Rotation
Sensors
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Spectra
White noise
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Summary: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.
ISSN:0010-9525
1608-3075
DOI:10.1134/S0010952522700174