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Two inversion methods for electromagnetic scattering, the deterministic gradient search method and the Monte Carlo random search method， are proposed in this paper. Firstly, the fundamental principles of the two methods are introduced. Inversion properties including the positioning capability of the scattering body, inversion accuracy and inversion time of the two methods are analyzed and compared. Simulation results demonstrates that the deterministic gradient search method can be used for scattering body positioning and the results using Monte Carlo random search method have high-precision at the same time have high speed. Successive applications of both methods fully realize the advantages of the two methods and improve the inversion result.
[1] ［1］Sun G, Chang Q S, Sheng P 2003 Phys. Rev. Lett. 90 104301
[2] ［2］Cha D H, Berryman J G 2004 Phys. Rev. Lett. 92 023902
[3] ［3］Sun X M, Han Y P 2006 Acta Phys. Sin. 55 682 (in Chinese) ［孙贤明、韩一平 2006 55 682］
[4] ［4］Yang H W, Chen R S, Zhang Y 2006 Acta Phys. Sin. 55 3464 (in Chinese) ［杨宏伟、陈如山、张云 2006 55 3464］
[5] ［5］Qiao L F, Zhang Y M, Xie Q Y, Fang J, Wang J J 2007 Acta Phys. Sin. 56 6736 (in Chinese)［乔立峰、张永明、谢启源、方俊、王进军 2007 56 6736］
[6] ［6］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］
[7] ［7］Wu F, Wang T H 2003 Acta Phys. Sin. 52 697 (in Chinese) ［吴凡、王太宏 2003 52 697］
[8] ［8］Yang L X, Ge D B 2006 Acta Phys. Sin. 55 1751 (in Chinese)［杨利霞、葛德彪 2006 55 1751］
[9] ［9］Chen G B, Wang H N, Yao J J, Han Z Y 2009 Acta Phys. Sin. 58 3848 (in Chinese)［陈贵波、汪宏年、姚敬金、韩子夜 2009 58 3848］
[10] ］Tang Z J, He Y G 2009 Acta Phys. Sin. 58 5126 (in Chinese) ［唐志军、何怡刚 2009 58 5126］
[11] ］Ye H X, Jin Y Q 2009 Acta Phys. Sin. 58 4579 (in Chinese) 2［叶红霞、金亚秋 2009 58 4579］
[12] ］Zhang Y Q, Ge D B 2009 Acta Phys. Sin. 58 4573 (in Chinese) ［张玉强、葛德彪 2009 58 4573］
[13] ］Zuo H Y, Yang J G 2007 Acta Phys. Sin. 56 6132 (in Chinese) ［左浩毅、杨经国 2007 56 6132］
[14] ］Wei B, Ge D B, Wang F 2008 Acta Phys. Sin. 57 6290 (in Chinese)［魏冰、葛德彪、王飞 2008 57 6290］
[15] ］Huang C J, Liu Y F, Wu Z S, Sun Y Q, Long S M 2009 Acta Phys. Sin. 58 2397 (in Chinese) ［黄朝军、刘亚峰、吴振森、孙彦清、龙姝明 2009 58 2397］
[16] ］Xu L J, Yuan N C 2005 IEEE Microw. Wireless Compon. Lett. 15 126
[17] ］Sullivan D M 1996 IEEE Trans. Antennas Propag. 44 28
[18] ］Lubbers R J, Hunsberger F P, Kunz K S 1990 IEEE Transactions 9 218
[19] ］Ma W G 2005 Computational Physics (Beijing: Science Press) p76 (in Chinese) ［马文淦 2005 计算物理学 （北京：科学出版社） 第76页］
[20] ］Wang Y M, Chew W C 1990 IEEE Transactions 9 211
[21] ］Mur G 1994 IEEE Transactions 23 377
[22] ］Chen G L 2002 Parallel Computer Architecture (Beijing: Higher Education Press) p17 (in Chinese) ［陈国良 2002 并行计算机体系结构 (北京: 高等教育出版社) 第17页］
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[1] ［1］Sun G, Chang Q S, Sheng P 2003 Phys. Rev. Lett. 90 104301
[2] ［2］Cha D H, Berryman J G 2004 Phys. Rev. Lett. 92 023902
[3] ［3］Sun X M, Han Y P 2006 Acta Phys. Sin. 55 682 (in Chinese) ［孙贤明、韩一平 2006 55 682］
[4] ［4］Yang H W, Chen R S, Zhang Y 2006 Acta Phys. Sin. 55 3464 (in Chinese) ［杨宏伟、陈如山、张云 2006 55 3464］
[5] ［5］Qiao L F, Zhang Y M, Xie Q Y, Fang J, Wang J J 2007 Acta Phys. Sin. 56 6736 (in Chinese)［乔立峰、张永明、谢启源、方俊、王进军 2007 56 6736］
[6] ［6］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］
[7] ［7］Wu F, Wang T H 2003 Acta Phys. Sin. 52 697 (in Chinese) ［吴凡、王太宏 2003 52 697］
[8] ［8］Yang L X, Ge D B 2006 Acta Phys. Sin. 55 1751 (in Chinese)［杨利霞、葛德彪 2006 55 1751］
[9] ［9］Chen G B, Wang H N, Yao J J, Han Z Y 2009 Acta Phys. Sin. 58 3848 (in Chinese)［陈贵波、汪宏年、姚敬金、韩子夜 2009 58 3848］
[10] ］Tang Z J, He Y G 2009 Acta Phys. Sin. 58 5126 (in Chinese) ［唐志军、何怡刚 2009 58 5126］
[11] ］Ye H X, Jin Y Q 2009 Acta Phys. Sin. 58 4579 (in Chinese) 2［叶红霞、金亚秋 2009 58 4579］
[12] ］Zhang Y Q, Ge D B 2009 Acta Phys. Sin. 58 4573 (in Chinese) ［张玉强、葛德彪 2009 58 4573］
[13] ］Zuo H Y, Yang J G 2007 Acta Phys. Sin. 56 6132 (in Chinese) ［左浩毅、杨经国 2007 56 6132］
[14] ］Wei B, Ge D B, Wang F 2008 Acta Phys. Sin. 57 6290 (in Chinese)［魏冰、葛德彪、王飞 2008 57 6290］
[15] ］Huang C J, Liu Y F, Wu Z S, Sun Y Q, Long S M 2009 Acta Phys. Sin. 58 2397 (in Chinese) ［黄朝军、刘亚峰、吴振森、孙彦清、龙姝明 2009 58 2397］
[16] ］Xu L J, Yuan N C 2005 IEEE Microw. Wireless Compon. Lett. 15 126
[17] ］Sullivan D M 1996 IEEE Trans. Antennas Propag. 44 28
[18] ］Lubbers R J, Hunsberger F P, Kunz K S 1990 IEEE Transactions 9 218
[19] ］Ma W G 2005 Computational Physics (Beijing: Science Press) p76 (in Chinese) ［马文淦 2005 计算物理学 （北京：科学出版社） 第76页］
[20] ］Wang Y M, Chew W C 1990 IEEE Transactions 9 211
[21] ］Mur G 1994 IEEE Transactions 23 377
[22] ］Chen G L 2002 Parallel Computer Architecture (Beijing: Higher Education Press) p17 (in Chinese) ［陈国良 2002 并行计算机体系结构 (北京: 高等教育出版社) 第17页］
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