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Sea Surfaces Scattering by Multi-Order Small-Slope Approximation: a Monte-Carlo and Analytical Comparison | ||
| AUT Journal of Electrical Engineering | ||
| مقاله 2، دوره 51، شماره 2، اسفند 2019، صفحه 123-130 اصل مقاله (2.49 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/eej.2019.14446.5229 | ||
| نویسندگان | ||
| Nafiseh Radkani؛ Bijan Zakeri* | ||
| Babol Noshirvani University of Technology | ||
| چکیده | ||
| L-band electromagnetic scattering from two-dimensional random rough sea surfaces are calculated by first- and second-order Small-Slope Approximation (SSA1, 2) methods. Both analytical and numerical computations are utilized to calculate incoherent normalized radar cross-section (NRCS) in mono- and bi-static cases. For evaluating inverse Fourier transform, inverse fast Fourier transform (IFFT) is performed to reduce computational burdens. For the SSA simulations, surface dimensions are large as all sea spectrum components are included. Considering the integration domain of the Analytical SSA (A-SSA), it requires huge computer memories especially at high frequencies and high wind speeds. In this regard, the numerical SSA (N-SSA) employs less memory, however, it requires more running time because of Monte-Carlo simulations. By applying tapered incident plane wave (TPW) to the N-SSA, dimensions are reduced to enhance computational efficiency in comparison with the A-SSA. As a result, the N-SSA with the TPW is applicable to high wind speeds, where the A-SSA may be limited. To validate the SSA, Results are compared with those from the method of moments (MoMs) in VV polarization. The results of different methods show good agreements at low wind speeds and incident angles less than 60 degrees. At high wind speeds, there are some differences between the SSA1 and the SSA2 recommending on the SSA2 to use, due to the higher order of accuracy | ||
| کلیدواژه‌ها | ||
| Electromagnetic scattering؛ normalized radar cross-section؛ sea surface؛ small slope approximation | ||
| مراجع | ||
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[1] T. Elfouhaily, B. Chapron, and K. Katsaros, D. Vandemark, "A unified directional spectrum for long and short wind-driven waves," Journal of Geophysical Research, Vol. 102, No. C7, Pages 15,781-15,796, July 15, 1997. [2] D. Miret, G. Soriano, and M. Saillard, "Rigorous Simulations of Microwave Scattering from Finite Conductivity Two-Dimensional Sea Surfaces at Low Grazing Angles," IEEE Trans. Geosci. Remote Sens., Vol. 52, No. 6, June 2014. [3] O. Ozgun, and M. Kuzuoglu, "Monte Carlo-Based Characteristic Basis Finite-Element Method (MC-CBFEM) for Numerical Analysis of Scattering from Objects On/Above Rough Sea Surfaces," IEEE Trans. Geosci. Remote Sens., Vol. 50, No. 3, March 2012. [4] F. D. Hastings, J. B. Schneider, S. L. Broschat, "A Monte-Carlo FDTD Technique for Rough Surface Scattering," IEEE Trans. Antennas Propag., Vol. 43, No. 11, Nov 1995. [5] X. Duan, and M. Moghaddam, " 3-D Vector Electromagnetic Scattering from Arbitrary Random Rough Surfaces Using Stabilized Extended Boundary Condition Method for Remote Sensing of Soil Moisture," IEEE Trans. Geosci. Remote Sens., Vol. 50, No. 1, Jan. 2012. [6] D. P. Nicholls, "A rapid boundary perturbation algorithm for scattering by families of rough surfaces," J. Comput. Phys. 228 (2009) 3405–3420. [7] J. Y. Liu, C. F. Huang, P. C. Hsueh, "Acoustic plane-wave scattering from a rough surface over a random fluid medium," J. Ocean Eng. 29 (2002) 915–930. [8] L. Tsang, J. A. Kong, and K. H. Ding, Scattering of Electromagnetic Waves, Vol. 1: Theory and Applications. Hoboken, NJ, USA: Wiley, 2000. [9] L. Tsang and J. A. Kong, Scattering of Electromagnetic Waves, Vol. 3: Advanced Topics. Hoboken, NJ, USA: Wiley, 2001. [10] M. R. Mousavi, M. Karimi, A. Jamshidi, "Probability distribution of acoustic scattering from slightly rough [11] K. L. Chen, K. S. Chen, Z. L. Li, and Y. Liu, "Extension and Validation of an Advanced Integral Equation Model for Bistatic Scattering from Rough Surfaces," Progress in Electromagnetics Research, Vol. 152, 59–76, 2015. [12] G. Soriano and C. A. Guérin, " A Cutoff Invariant Two-Scale Model in Electromagnetic Scattering From Sea Surfaces," IEEE Geosci. Remote Sens., Lett., Vol. 5, No. 2, April 2008. [13] A. G. Voronovich, “Small-slope approximation for electromagnetic wave scattering at a rough interface of two dielectric half-spaces,” Waves Random Media, vol. 4, no. 3, pp. 337–367, Jul. 1994. [14] A. G. Voronovich, Wave Scattering from Rough Surfaces, ser. Springer Series on Wave Phenomena. Berlin, Germany: Springer-Verlag, 1994. [15] A. G. Voronovich and V. U. Zavorotny, " Theoretical model for scattering of radar signals in Ku - and C-bands from a rough sea surface with breaking waves," Waves in Random Media, 11, 247-269, 2001. [16] Al. G. Voronovich and V. U. Zavorotny, "Full-Polarization Modeling of Monostatic and [17] X. Li and X. Xu, "Scattering and Doppler Spectral Analysis for Two-Dimensional Linear and Nonlinear Sea Surfaces," IEEE Trans. Geosci. Remote Sens., Vol. 49, No. 2, Feb. 2011. [18] W. Jiang, M. Zhang, Y. Zhao and D. Nie, "EM scattering calculation of large sea surface with SSA method at S, X, Ku, and K bands, Waves in Random and Complex Media," DOI: 10.1080/17455030.2016.1213463, 2016. [19] J. Li, M. Zhang, Pengbo Wei, and W. Jiang, "An Improvement on SSA Method for EM Scattering [20] L. Tsang and J. A. Kong, Scattering of Electromagnetic Waves. New York: Wiley, 2001, pp. 270–271. [21] N. Pinel, C. Bourlier, "Electromagnetic Wave Scattering from Random Rough Surfaces: Asymptotic models,"Hoboken, NJ, USA: wiley, London, UK: ISTE Ltd, 2013. [22] L. Tsang, T. H. Liao, S. Tan, H. Huang, T. Qiao, and K. H. Ding, "Rough Surface and Volume Scattering of Soil Surfaces, Ocean Surfaces, Snow, and Vegetation Based on Numerical Maxwell Model of 3-D Simulations," IEEE J. Sel. Topics Appl. Earth Obs., 2017. [23] X. Duan, and M. Moghaddam, "3-D Vector Electromagnetic Scattering from Arbitrary Random Rough Surfaces Using Stabilized Extended Boundary Condition Method for Remote Sensing of Soil Moisture," IEEE Trans. Geosci. Remote Sens., Vol. 50, No. 1, Jan 2012. | ||
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