WIND EFFECT ON THE CHARACTERISTICS OF RADIO WAVE SCATTERING FOR THE TWO-POSITION RADIO ACOUSTIC SOUNDING
PACS number: 94.20.ws Purpose: Radio wave scattering by a sound pulse in the atmosphere when wind is present is investigated theoretically.Design/methodology/approach: The asymptotic of the scattered field in the Fresnel diffraction approximation is analyzed with Gaussian directional patterns of rad...
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| Datum: | 2017 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | rus |
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Видавничий дім «Академперіодика»
2017
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| Online Zugang: | http://rpra-journal.org.ua/index.php/ra/article/view/1265 |
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| Назва журналу: | Radio physics and radio astronomy |
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Radio physics and radio astronomy| Zusammenfassung: | PACS number: 94.20.ws Purpose: Radio wave scattering by a sound pulse in the atmosphere when wind is present is investigated theoretically.Design/methodology/approach: The asymptotic of the scattered field in the Fresnel diffraction approximation is analyzed with Gaussian directional patterns of radiating systems.Findings: It is shown that for small angles of backscattering the field is concentrated in a bounded area moving under the exposure of transverse wind velocity.Conclusions: Explanation of the focusing effects dependence on wind velocity is suggested.Key words: wave scattering, wave front, “degenerate” saddle point, focusingManuscript submitted 17.01.2017Radio phys. radio astron. 2017, 22(2): 146-156REFERENCES1. BRYUKHOVETSKI, A. S. and VICHKAN', A. V., 2016. On Peculiarities of Radio Wave Skattering by a Sound Pulse in the Atmosphere. Radio Phys. Radio Astron. vol. 21, no. 1, pp. 24–36 (in Russian). DOI: https://doi.org/10.15407/rpra21.01.024 2. BRYUKHOVETSKI, A. S., 1970. Scattering of electromagnetic waves in the artificially created environments. PhD thesis ed. O. Ya. Usikov Institute for Radiophysics and Elektronics of NASU, Kharkiv, Ukraine (in Russian). 3. KALISTRATOVA, M. A. and KON, A. I., 1985. Radio Acoustic Sounding of the Atmosphere. Moscow, Russia: Nauka Publ. (in Russian). 4. KRYUKOVSKII, A. S., LUKIN, D. S., PALKIN, E. A. and RASTYAGAEV, D. S., 2006. Wave catastrophes: Types of focusing in diffraction and propagation of elec-tromagnetic waves. J. Commun. Technol. Electron. vol. 51, is. 10, id. 1087. DOI: https://doi.org/10.1134/S1064226906100019 5. IPATOV, E. V. and PALKIN, E. A., 1999. Investigation of Scanning and Multibeam Reflector Antennas by the Methods of the Theory of Wave Catastrophes. Radiotekhnika i Elektronika. vol. 44, no. 4, pp. 431–441 (in Russian). 6. FELSEN, L. B and MARKUVITZ, N., 1978. Radiation and Scattering of waves. Vol. 1. Moskow, Russia: Mir Publ. (in Russian). 7. ULIANOV, Y. N., VETROV, V. I. and MAKSIMOVA, N. G., 2007. Radioacoustic Wind Sounding of the Atmospheric boundary layer: history of Development and Perspectives. Visn. Khark. Nats. Univ. Radiophizyka ta Electronica. no. 756, pp. 27–32 (in Russian). 8. VARSHALOVICH, D. A., MOSKALEV, A. N. and KHERSONSKII, V. K., 1988. Quantum Theory of Angular Momentum. Singapure: World Scientific. |
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