Zakharchenko V.D., Kovalenko I.G. Promising Methods and Tools of Radar Astronomy

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https://doi.org/10.15688/mpcm.jvolsu.2026.1.8

Vladimir D. Zakharchenko
Doctor of Sciences (Engineering), Professor, Department of Radiophysics, 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 Phenomena, Volgograd State University
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https://orcid.org/0000-0003-1565-8940

Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract. We present the state of the art review for radar astronomy and its future prospects. We show that radar methods for probing asteroids can be used to monitor not only near-Earth space (distances of ∼ 10⁶—10⁷ km), but potentially also deep space with distances an order of magnitude greater. We consider a method for transforming the signal time scale that allows us to obtain a detailed radar portrait of an asteroid. We also provide an estimate of the maximum resolution of the asteroid’s rotation velocity using twisted radio signals in the case where rotation occurs in the plane of the image and the transverse Doppler effect is realized. The gain in measurement accuracy can be as much as ∼ 10⁴ times. This gain in accuracy allows the selection of slowly rotating asteroids with rotation frequencies down to values of ∼ 2.2 day⁻¹ . Moreover, the use of twisted radio signals makes it possible to measure the angular velocity of an asteroid’s rotation in single-pulse location mode for minutes or tens of seconds without prolonged recording of its light curve

Key words: small bodies of the Solar System, radar astronomy, broadband signals, twisted radio signals, stroboscopic signal processing.

Zakharchenko V.D., Kovalenko I.G. Promising Methods and Tools of Radar Astronomy is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Mathematical Physics and Computer Simulation. Vol. 29 No. 1 2026, pp. 87-107

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