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提出了快速计算二维导体粗糙面与面上金属目标复合散射的广义稀疏矩阵平面迭代及规范网格法(G-SMFSIA/CAG).推导了二维导体粗糙面与面上目标相互作用的耦合积分方程,用稀疏矩阵平面迭代及规范网格法(SMFSIA/CAG)求解粗糙面部分的表面积分方程,而用基于RWG基函数的矩量法(MOM)计算目标部分的表面积分方程,并通过更新方程的激励项迭代求解目标与粗糙面的相互耦合作用.结合Monte-Carlo方法产生具有PM(Pierson-Moskowitz)海浪谱的随机海洋粗糙面,数值分析了海面上不同形状导体目
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关键词:
- 复合散射 /
- 广义稀疏矩阵平面迭代及规范网格法 /
- 随机海洋粗糙面 /
- 双站散射系数
This paper presents a novel and powerful numerical technique called general sparse-matrix flat-surface iterative approach-canonical grid (G-SMFSIA/CAG), which combines the sparse-matrix flat-surface iterative approach-canonical grid (SMFSIA/CAG) for 2D conducting rough surface and the method of moment (MoM) based on Rao-Wilton-Glisson (RWG) function for PEC target, to compute the electromagnetic scattering from a three-dimensional PEC target on conducting rough surface. The coupling surface integral equations (SIEs) for the composite model are derived based on Huygens surface equivalence principle. The SMFSIA/CAG is applied to solve the SIE of rough surface, and the targets’ SIE is solved using MoM. The iteration of SMFSIA/CAG and MoM takes account the interactions between target and the rough surface. Combining the PM(Pierson-Moskowitz)sea surface generated using Monte-Carlo method, the bistatic scattering coefficient for different targets on sea surface are computed. Convergence and effectivity of the G-SMFSIA/CAG is numerically validated. The bistatic scattering coefficient from ship on sea surface is calculated finally,and the dependence of bistatic scattering pattern upon the wind speed is discussed.-
Keywords:
- composite scattering /
- general sparse-matrix flat-surface iterative approach-canonical grid (G-SMFSIA/CAG) /
- PM(Pierson-Moskowitz)sea surface /
- bistatic scattering coefficient
[1] Jin Y Q, Li Z 2001 IEEE Trans. on Fundamentals and Materials Society(A) 121 917
[2] Wang X, Wang C F, Gan Y B 2003 Progress In Electromagnetics Research PIER 40 207
[3] Ye H X,Jin Y Q 2006 IEEE Trans. on Geoscience Remote Sensing 44 108
[4] Wang Y H, Zhang Y M, Guo L X 2008 Acta Phys. Sin. 57 5529 (in Chinese) [王运华、张彦敏、郭立新 2008 57 5529] 〖5] Wang R,Guo L X,Qin S T,Wu Z S 2008 Acta Phys. Sin. 57 3473 (in Chinese) [王 蕊、郭立新、秦三团、吴振森 2008 物 理学报 57 3473] 〖6] Li Z X 2006 IEEE Trans. on Antennas Propagation 54 2072
[5] Lawrence D E, Sarabandi K 2002 IEEE Trans. on Antennas and Propagation 50 1368
[6] Wang Y H, Zhang Y M, He M X, Guo L X 2008 Chin Phys. B 17 3696
[7] Wang R,Guo L X, Li Juan, Liu X Y 2009 Science in China (G) 39 201 (in Chinese)[王 蕊、郭立新、李 娟、刘晓勇 2009中国科学G辑 39 201]
[8] Ye H X, Jin Y Q 2009 Acta Phys. Sin. 58 4579 (in Chinese) [叶红霞、金亚秋 2009 58 4579]
[9] Li X F, Xie Y J, Fan J, Wang Y Y 2009 Acta Phys. Sin. 58 908 (in Chinese) [李晓峰、谢拥军、樊 君、王元源 2009 58 908]
[10] Geng N, Ressler M A, Carin L 1999 IEEE Trans. Geoscience Remote Sensing 27 2609
[11] Johnson J T 2001 Microwave Opt Technol Lett. 30 130
[12] Liu Z J, He J Q, Xie Y J 2002 IEEE Trans. on Antennas Propagation 50 1838
[13] Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese) [叶红霞、金亚秋 2008 57 839]
[14] Ye H X, Jin Y Q 2008 Chinese Journal of Radio Science 23 1144 (in Chinese)[叶红霞、金亚秋 2008 电波科学学报23 1144]
[15] Guo L X, Wang Y H, Wu Z S 2005 Acta Phys. Sin. 54 5130 (in Chinese) [郭立新、王运华、吴振森 2005 54 5130]
[16] Kuang L,Jin Y Q 2007 IEEE Trans. on Antennas Propagation 55 1368
[17] Magda E S 2002 IEEE Trans. On Geoscience and Remote Sensing 40 982
[18] Tsang L, Kong J A, Ding K H 2000 Scattering of Electromagnetic Waves: Numerical Simulations (New York: John Wiley & Sons Inc) p278—285, p565—571
[19] Rao S M, Wlton D R, Glisson A W 1982 IEEE Trans. on Antennas Propagation 32 409
[20] ToPorkov J V, Brown G S 2000 IEEE Trans. on Geoscience and remote sensing 38 1616
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[1] Jin Y Q, Li Z 2001 IEEE Trans. on Fundamentals and Materials Society(A) 121 917
[2] Wang X, Wang C F, Gan Y B 2003 Progress In Electromagnetics Research PIER 40 207
[3] Ye H X,Jin Y Q 2006 IEEE Trans. on Geoscience Remote Sensing 44 108
[4] Wang Y H, Zhang Y M, Guo L X 2008 Acta Phys. Sin. 57 5529 (in Chinese) [王运华、张彦敏、郭立新 2008 57 5529] 〖5] Wang R,Guo L X,Qin S T,Wu Z S 2008 Acta Phys. Sin. 57 3473 (in Chinese) [王 蕊、郭立新、秦三团、吴振森 2008 物 理学报 57 3473] 〖6] Li Z X 2006 IEEE Trans. on Antennas Propagation 54 2072
[5] Lawrence D E, Sarabandi K 2002 IEEE Trans. on Antennas and Propagation 50 1368
[6] Wang Y H, Zhang Y M, He M X, Guo L X 2008 Chin Phys. B 17 3696
[7] Wang R,Guo L X, Li Juan, Liu X Y 2009 Science in China (G) 39 201 (in Chinese)[王 蕊、郭立新、李 娟、刘晓勇 2009中国科学G辑 39 201]
[8] Ye H X, Jin Y Q 2009 Acta Phys. Sin. 58 4579 (in Chinese) [叶红霞、金亚秋 2009 58 4579]
[9] Li X F, Xie Y J, Fan J, Wang Y Y 2009 Acta Phys. Sin. 58 908 (in Chinese) [李晓峰、谢拥军、樊 君、王元源 2009 58 908]
[10] Geng N, Ressler M A, Carin L 1999 IEEE Trans. Geoscience Remote Sensing 27 2609
[11] Johnson J T 2001 Microwave Opt Technol Lett. 30 130
[12] Liu Z J, He J Q, Xie Y J 2002 IEEE Trans. on Antennas Propagation 50 1838
[13] Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese) [叶红霞、金亚秋 2008 57 839]
[14] Ye H X, Jin Y Q 2008 Chinese Journal of Radio Science 23 1144 (in Chinese)[叶红霞、金亚秋 2008 电波科学学报23 1144]
[15] Guo L X, Wang Y H, Wu Z S 2005 Acta Phys. Sin. 54 5130 (in Chinese) [郭立新、王运华、吴振森 2005 54 5130]
[16] Kuang L,Jin Y Q 2007 IEEE Trans. on Antennas Propagation 55 1368
[17] Magda E S 2002 IEEE Trans. On Geoscience and Remote Sensing 40 982
[18] Tsang L, Kong J A, Ding K H 2000 Scattering of Electromagnetic Waves: Numerical Simulations (New York: John Wiley & Sons Inc) p278—285, p565—571
[19] Rao S M, Wlton D R, Glisson A W 1982 IEEE Trans. on Antennas Propagation 32 409
[20] ToPorkov J V, Brown G S 2000 IEEE Trans. on Geoscience and remote sensing 38 1616
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