DOI: https://doi.org/10.3103/S0735272715110035
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Cross section of sea surface

Influence of double interaction in multipath propagation at small grazing angles

Yuriy F. Logvinov, Vadim B. Razskazovsky

Abstract


In the case of low wind-induced waves the surface irregularities of troughs between sea waves ridges are located outside of the deep shadowing region with respect to the corresponding points and it is necessary to estimate their role in the field forming at the receiving point. The analysis has demonstrated that under these conditions there may occur a multiple interaction of the irradiating field with the irregularities of underlying surface. The analysis is limited by the account of double interaction due to the significant magnitude reduction for each reradiation of the secondary wave with respect to the original one. It this paper we propose to estimate its influence using the technique of comparison of the received signal characteristics, which have been obtained by taking into account the double interaction and without it.

The characteristics are obtained by the simulation of the electromagnetic field propagation in the case of low wind-induced waves in the context of Kirchhoff approximation using the secondary Huygens sources principle.


Keywords


millimeter radio wave; sea surface; extremely small grazing angles; smooth sea surface; double interaction

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References


BECKMAN, P.; SPIZZICGINO, A. The Scattering of Electromagnetic Waves from Rough Surfaces. London: Pergamon Press, 1963, 303 p.

FEYNBERG, Y.L. Propagation of Radiowaves along the Earth Surface. Moscow: Physmatlit, 1999 [in Russian].

BASS, F.G.; FUKS, I.M. Wave Scattering by Statistically Roughened Surface. Moscow: Nauka, 1972 [in Russian].

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Microwave propagation factor at small grazing angle over sea: The model of multiple knife-edge diffraction. Telecom. Radio Eng., 2007, v.66, n.18, p.1615, doi: http://dx.doi.org/10.1615/TelecomRadEng.v66.i18.10.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Microwave propagation factor at small grazing angle over sea: Transient domain. Telecom. Radio Eng., 2007, v.66, n.18, p.1635, doi: http://dx.doi.org/10.1615/TelecomRadEng.v66.i18.20.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Propagation of centimeter and millimeter radio waves at small grazing angles: The model of multiple screen diffraction. Radiophysics and Quantum Electronics, 2008, v.51, n.8, p.633-642, doi: http://dx.doi.org/10.1007/s11141-008-9060-4.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. The diffraction model of wave propagation in elevation measurement of a radiation source. Telecom. Radio Eng., 2010, v.69, n.5, p.409, doi: http://dx.doi.org/10.1615/TelecomRadEng.v69.i5.40.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Heuristic model of microwave field over the rough sea surface under intense shadowing. Telecom. Radio Eng., 2011, v.70, n.14, p.1217, doi: http://dx.doi.org/10.1615/TelecomRadEng.v70.i14.10.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Errors of direction - finding of radiant under the action of radio waves diffraction on the obstacle boundary. Telecom. Radio Eng., 2011, v.70, n.12, p.1037, doi: http://dx.doi.org/10.1615/TelecomRadEng.v70.i12.20.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. A model of multipath propagation of millimeter radio waves over the sea surface at strong shadowings. Telecom. Radio Eng., 2014, v.73, n.4, p.281, doi: http://dx.doi.org/10.1615/TelecomRadEng.v73.i4.10.

YEREMKA, V.D.; KABANOV, V.A.; LOGVINOV, Y.F.; ET AL. Peculiarities of Radiowaves Propagation over the Sea Surface. Sevastopol: Weber, 2013 [in Russian, ed. by V. B. Razskazovsky], ISBN 978-966-335-403-3.

RAZSKAZOVSKY, V.B.; LOGVINOV, Y.F. Distinctive features of forming the space-time millimeter radio-wave field at low altitudes above the sea surface. Telecom. Radio Eng., 2014, v.73, n.5, p.399-411, doi: http://dx.doi.org/10.1615/TelecomRadEng.v73.i5.30.

HERON, MALCOLM L.; SKIRVING, WILLIAM J.; MICHAEL, KELVIN J. Short-wave ocean wave slope models for use in remote sensing data analysis. IEEE Trans. Geosci. Remote Sensing, Jul. 2006, v.44, n.7, p.1962-1973, doi: http://dx.doi.org/10.1109/TGRS.2006.870439.

KOSNIK, M.V.; DULOV, V.A. Two-dimensional spatial spectrums of short wind waves under natural conditions. Proc. of Ecological Compliance of Coastal and Shelf Zones and Complex Shelf Resource Utilization. Sevastopol: Marine Hydrophysical Institute, 2010, p.103-116 [in Russian].

RAZSKAZOVSKY, V.B. Diffraction by a half-plane with an irregular edge in the problem of radiowave propagation over a surface at small grazing angles. Radiophysics and Quantum Electronics, 1997, v.40, n.8, p.644-654, doi: http://dx.doi.org/10.1007/BF02676487.

DOUGHERTY, H.T.; MALONEY, L.J. Application of diffractions by convex surfaces to irregular terrain situations. Radio Science J. Res. NBS/USNC-URSI, Feb. 1964, v.68D, n.2, p.239-250, http://nvlpubs.nist.gov/nistpubs/jres/68D/jresv68Dn2p239_A1b.pdf.

KOUYOUMJIAN, R.G.; PATHAK, P.H. A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface. Proc. IEEE, Nov. 1974, v.62, n.11, p.1448-1461, doi: http://dx.doi.org/10.1109/PROC.1974.9651.

WALFISCH, J.; BERTONI, HENRY L. A theoretical model of UNF propagation in urban environments. IEEE Trans. Antennas Propag., Dec. 1988, v.36, n.12, p.1788-1796, doi: http://dx.doi.org/10.1109/8.14401.







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