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A hybrid algorithm of time domain integral equation (TDIE) and time domain Kirchhof approximation (TDKA) is proposed to compute the TM transient scattering from a 2-dimensional (2D) perfectly conducting (PEC) target above 2D PEC randomly rough surface. Explicit and implicit procedures of Marching-on-in-time (MOT) are developed, respectively. TDKA is applied to the rough surface while TDIE is applied to the target, and the mixed iteration of TDIE/TDKA is introduced to take into account the interactions between the target and the rough surface. In numerical examples, both bent strip (open structure) and cylinder (closed struc- ture) are considered and numerical results present the target surface current response and the far scattered electric field response, which are compared with those obtained from whole TDIE. Numerical results demonstrate the efficiency and the accuracy of the hybrid algorithm. Still in numerical examples, the influence on the far scattered electric field caused by the target is discussed.
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Keywords:
- randomly rough surface /
- composite transient scattering /
- TDIE and TDKA /
- hybrid algorithm
[1] Ye H X, Jin Y Q 2008 Chin. Phys. B 17 839
[2] Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese)[叶红霞、金亚秋 2008 物理学报 57 839]
[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 物理学报 59 3179]
[4] Li J, Guo L X, Zeng H, Han X B 2009 Chin. Phys. B 18 2757
[5] 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 物理学报 54 5130]
[6] Nie D, Zhang M 2010 Chin. Phys. B 19 074101
[7] Guo L X, Wang R, Wu Z S 2010 Chin. Phys. B 19 044102
[8] Ji W J 2011 Acta Phys. Sin. 60 010300 (in Chinese) [姬伟杰 2011 物理学报 60 010300]
[9] Wang R, Guo L X, Ma J, Wu Z S 2009 Chin. Phys. B 18 1503
[10] 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]
[11] Wang Y H, Zhang Y M, He H X, Guo L X 2008 Chin. Phys. B 17 3696
[12] Wang R, Guo L X 2009 Science in China 39 201 (in Chinese) [王 蕊、郭立新 2009 中国科学 39 201]
[13] Qin S T, Gong S X, Wang R, Guo L X, 2010 Progress In Electromagnetics Research 102 181
[14] Rao S M 1999 Time Domain Electromagenetics (ACADEMIC) Ch. 3
[15] Rynne B P 1986 Electromagnetics 6 129
[16] Vechinski D A, Rao S M 1992 IEEE Trans. on Antennas and Propagation 40 661
[17] Ge D B, Yan Y B 2005 Finite-Difference Time-Domain Method for Electromagnetic Waves (Xi'an of China: Xidian Press) Ch. 5, Ch.11(in Chinese)[葛德彪、闫玉波 2005 电磁波时域有限差分方法(西安:西电出版社)第5,11章]
[18] Tsang L, Kong J A 2001 Scattering of Electromagnetic Waves: Numerical simulations (New York : John Wiley & Sons Inc. ) Ch. 4
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[1] Ye H X, Jin Y Q 2008 Chin. Phys. B 17 839
[2] Ye H X, Jin Y Q 2008 Acta Phys. Sin. 57 839 (in Chinese)[叶红霞、金亚秋 2008 物理学报 57 839]
[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 物理学报 59 3179]
[4] Li J, Guo L X, Zeng H, Han X B 2009 Chin. Phys. B 18 2757
[5] 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 物理学报 54 5130]
[6] Nie D, Zhang M 2010 Chin. Phys. B 19 074101
[7] Guo L X, Wang R, Wu Z S 2010 Chin. Phys. B 19 044102
[8] Ji W J 2011 Acta Phys. Sin. 60 010300 (in Chinese) [姬伟杰 2011 物理学报 60 010300]
[9] Wang R, Guo L X, Ma J, Wu Z S 2009 Chin. Phys. B 18 1503
[10] 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]
[11] Wang Y H, Zhang Y M, He H X, Guo L X 2008 Chin. Phys. B 17 3696
[12] Wang R, Guo L X 2009 Science in China 39 201 (in Chinese) [王 蕊、郭立新 2009 中国科学 39 201]
[13] Qin S T, Gong S X, Wang R, Guo L X, 2010 Progress In Electromagnetics Research 102 181
[14] Rao S M 1999 Time Domain Electromagenetics (ACADEMIC) Ch. 3
[15] Rynne B P 1986 Electromagnetics 6 129
[16] Vechinski D A, Rao S M 1992 IEEE Trans. on Antennas and Propagation 40 661
[17] Ge D B, Yan Y B 2005 Finite-Difference Time-Domain Method for Electromagnetic Waves (Xi'an of China: Xidian Press) Ch. 5, Ch.11(in Chinese)[葛德彪、闫玉波 2005 电磁波时域有限差分方法(西安:西电出版社)第5,11章]
[18] Tsang L, Kong J A 2001 Scattering of Electromagnetic Waves: Numerical simulations (New York : John Wiley & Sons Inc. ) Ch. 4
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