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采用Pierson-Moscowitz(PM)海谱和Monte Carlo方法模拟实际的粗糙海面, 基于矩量法和基尔霍夫近似的混合算法研究了海面与其上方双矩形截面导体柱的复合电磁散射特性, 得出了复合散射系数的角分布曲线, 计算了复合散射系数随海面参数、矩形截面柱参数以及入射波参数的变化情况, 并做了详细分析与讨论, 得到了PM谱海面与其上方双矩形截面柱复合散射特性. 结果表明, 与单纯的矩量法相比较, 采用基于矩量法和基尔霍夫近似的混合算法, 既可获得较高的准确性, 同时又可减少计算时间和内存占用量, 而且粗糙面尺度越大该优势越明显.The actual rough sea surface is described by Pierson-Moscowitz (PM) spectrum and Monte Carlo method; the composite electromagnetic scattering from the double rectangular crosssection conductor columns above the rough sea surface is investigated using the hybrid methodthe Method of Moment with the Kirchhoff approximation. Angular distribution curves of composite scattering coefficient are obtained; and this coefficient that varies with the parameter of sea surface, rectangular cross-section conductor columns and incident waves is calculated in detail. The characteristics of the composite scattering coefficient from the double rectangular cross-section conductor columns above the rough sea surface are also obtained. Results show that the hybrid methodthe Method of Moment with the Kirchhoff approximation, compared to the traditional Method of Moment, can obtain higher accuracy. Moreover, the hybrid method can effectively reduce the computation time and memory footprint, and the performance becomes more favorable with the increase of the sizes of rough surface.
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Keywords:
- hybrid method /
- composite electromagnetic scattering /
- rough sea surface /
- double rectangular cross-section conductor columns
[1] Chen Y P, Nie Z P, Jun H 2010 Journal of Systems Engineering and Electronics 21 37
[2] Ozlem O, Mustafa K 2012 IEEE Trans. Geosci. remote Sensing 50 769
[3] Wang R, Guo L X, Wang A Q 2010 Acta Phys. Sin. 59 3179 (in Chinese) [王蕊, 郭立新, 王安琪 2010 59 3179]
[4] Xu R W, Guo L X, Fan T Q 2013 Chin. Phys. Lett. 30 124101
[5] Wang J G, Zhao Z Q, Liu Q H 2015 IEEE Geoscince and Remote Sensing Letters 12 299
[6] Ahmet Kizilay, Senem Makal Yucedag 2014 Journal of Electromagnetic Wave and Applications 28 593
[7] Liu P, Jin Y Q 2005 IEEE Trans. on Antennnas Propag. 53 4137
[8] Wang X, Li L W 2009 Prog. Electromag. Res. 91 35
[9] Li J, Guo L X 2013 IEEE Geoscience and Remote Sensing Letterers 10 4
[10] Guo L X, Wang R, Wu Z S 2010 Chin. Phys. B 19 044102
[11] Qin S T, Guo L X, Dai S Y, et al 2011 Acta Phys. Sin. 60 074217 (in Chinese) [秦三团, 郭立新, 代少玉, 龚书喜 2011 60 074217]
[12] Toporkov J V, Brown G S 2000 IEEE Trans. Geosci. Remote Sensing. 38 1616
[13] Tsang L, Kong J A, Ding K H 2001 Scattering of electromagnetic waves ( New York: John Wiley & Sons. Inc) p168
[14] Jin Y Q, Liu P, Ye H X 2008 Theory and Method of numerical simulation of composite scattering from the object and randomly rough surface (Beijing:Science Press) p113 (in Chinese) [金亚秋, 刘鹏, 叶红霞 2008 随机粗糙面与目标复合散射数值模拟理论与方法(北京: 科学出版社)第113页]
[15] Wang R, Guo L X, Qin S T, Wu Z S 2008 Acta Phys. Sin. 57 3773 (in Chinese) [王蕊, 郭立新, 秦三团, 吴振森 2008 57 3773]
[16] Kong J A (translated by Wang G Y) 2003 Electromagnetic Wave Theory (Beijing: Publishing House of Electronics Industry) p286-288 (in Chinese) [孔金瓯著 (吴季译) 2003 电磁波理论(北京: 电子工业出版社)第 286–288页]
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[1] Chen Y P, Nie Z P, Jun H 2010 Journal of Systems Engineering and Electronics 21 37
[2] Ozlem O, Mustafa K 2012 IEEE Trans. Geosci. remote Sensing 50 769
[3] Wang R, Guo L X, Wang A Q 2010 Acta Phys. Sin. 59 3179 (in Chinese) [王蕊, 郭立新, 王安琪 2010 59 3179]
[4] Xu R W, Guo L X, Fan T Q 2013 Chin. Phys. Lett. 30 124101
[5] Wang J G, Zhao Z Q, Liu Q H 2015 IEEE Geoscince and Remote Sensing Letters 12 299
[6] Ahmet Kizilay, Senem Makal Yucedag 2014 Journal of Electromagnetic Wave and Applications 28 593
[7] Liu P, Jin Y Q 2005 IEEE Trans. on Antennnas Propag. 53 4137
[8] Wang X, Li L W 2009 Prog. Electromag. Res. 91 35
[9] Li J, Guo L X 2013 IEEE Geoscience and Remote Sensing Letterers 10 4
[10] Guo L X, Wang R, Wu Z S 2010 Chin. Phys. B 19 044102
[11] Qin S T, Guo L X, Dai S Y, et al 2011 Acta Phys. Sin. 60 074217 (in Chinese) [秦三团, 郭立新, 代少玉, 龚书喜 2011 60 074217]
[12] Toporkov J V, Brown G S 2000 IEEE Trans. Geosci. Remote Sensing. 38 1616
[13] Tsang L, Kong J A, Ding K H 2001 Scattering of electromagnetic waves ( New York: John Wiley & Sons. Inc) p168
[14] Jin Y Q, Liu P, Ye H X 2008 Theory and Method of numerical simulation of composite scattering from the object and randomly rough surface (Beijing:Science Press) p113 (in Chinese) [金亚秋, 刘鹏, 叶红霞 2008 随机粗糙面与目标复合散射数值模拟理论与方法(北京: 科学出版社)第113页]
[15] Wang R, Guo L X, Qin S T, Wu Z S 2008 Acta Phys. Sin. 57 3773 (in Chinese) [王蕊, 郭立新, 秦三团, 吴振森 2008 57 3773]
[16] Kong J A (translated by Wang G Y) 2003 Electromagnetic Wave Theory (Beijing: Publishing House of Electronics Industry) p286-288 (in Chinese) [孔金瓯著 (吴季译) 2003 电磁波理论(北京: 电子工业出版社)第 286–288页]
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