Zakharchenko V.D., Kovalenko I.G., Akimov P.A., Denisov Z.A. On the Possibility of Assessing the Geometric Characteristics of an Asteroid Using Radar Signatures
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https://doi.org/10.15688/mpcm.jvolsu.2023.4.6
Vladimir D. Zakharchenko
Doctor of Sciences (Technics), Professor, Department of Radiohysics,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Ilya G. Kovalenko
Doctor of Sciences (Physics and Mathematics), Professor, Department of Theoretical Physics and Wave Processes,
Volgograd State University
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https://orcid.org/0000-0003-1565-8940
Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Pavel A. Akimov
Student, Institute of Mathematics and Information Technologies,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Zakhar A. Denisov
Postraduate Student, Department of Theoretical Physics and Wave Processes,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Abstract. The problem of backscattering of short radio pulses (broadband radio signals) from moving asteroid is considered. The Stratton-Chu diffraction integral is used, generalized to take into account the Doppler effect. A convex asteroid is approximated by a triaxial ellipsoid. A non-convex asteroid is modeled by two ellipsoidal bodies of different sizes connected to each other (model of the contact double asteroid 486958 Arrokoth). A series of radar portraits was constructed depending on the ratio between the lengths of the main semi-axes ellipsoid. A radar portrait of a non-convex asteroid is given for some non-coaxial with the line sighting the orientation of its parts. It is concluded that it is possible to restore the main geometric characteristics of the asteroid according to the radar portrait. It is noted that this approach allows us to find in real time the geometric characteristics of asteroids that interest us (simultaneous determination of the size of an object in the tangent plane and along the line of sight).
Key words: small celestial bodies, radar astronomy, broadband signals, radar signatures, impulse response of space objects.
On the Possibility of Assessing the Geometric Characteristics of an Asteroid Using Radar Signatures by Zakharchenko V.D., Kovalenko I.G., Akimov P.A., Denisov Z.A. is licensed under a Creative Commons Attribution 4.0 International License.
Citation in English: Mathematical Physics and Computer Simulation. Vol. 26 No. 4 2023, pp. 69-82
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