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A novel high-frequency radar cross section prediction method is introduced to solve the scattering from electrically large conductive target. It can be realized by combining a modified-vector physical optics algorithm and a graphical electromagnetic computing algorithm. In consideration of the traditional physical optics algorithm which needs to compute the edge diffraction, the radar cross section of the target cannot be calculated directly, but it is needed to first calculate the diffraction contribution, then to add the scattering contribution, therefore the radar cross section of the target can be finally obtained. By using the improved graphical electromagnetic computing, the surface normals, thus the surface current, can be directly corrected. Therefore the diffraction at the edges is taken into account, thereby improving the efficiency of the algorithm. The central processing unit running time involves only the time needed to compute the electromagnetic part, with leaving the geometric part to the graphics hardware. The line integrals are computed over an arbitrary shape in real time. Numerical results demonstrate the good accuracy and efficiency of the modified method.
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Keywords:
- modified-vector physical optics algorithm /
- physical optics algorithm /
- graphical electromagnetic computing /
- electromagnetic scattering
[1] Li X F, Xie Y J, Wang P, Yang R 2008 Acta Phys. Sin. 57 2930 (in Chinese) [李晓峰, 谢拥军, 王鹏, 杨瑞 2008 物理学报 57 2930]
[2] Wu Z S, Zhang X D, Wu C K 1997 Chin. Phys. Lett. 14 32
[3] Li X F, Xie Y J, Fan J 2009 Acta Phys. Sin. 58 908 (in Chinese) [李晓峰, 谢拥军, 樊君 2009 物理学报 58 908]
[4] Kubicke G, Bourlier C, Saillard J 2008 IEEE Trans. Anten. Propag. 56 3029
[5] Ji W J, Tong C M 2012 Acta Phys. Sin. 61 160301 (in Chinese) [姬伟杰, 童创明 2012 物理学报 61 160301]
[6] Chauviere C, Hesthaven J S, Wilcox L C 2007 IEEE Trans. Anten. Propag. 55 1437
[7] Li J, Guo L X, Zeng H, Han X B 2009 Chin. Phys. B 18 2757
[8] Ma J, Guo L X, Wang A Q 2009 Chin. Phys. B 18 3431
[9] Li Z 2009 Ph. D. Dissertation (Nanjing: Southeast University) (in Chinese) [李茁 2009 博士学位论文 (南京: 东南大学)]
[10] Shi Y L, Zhou Q L, Zhang C L 2009 Chin. Phys. B 18 5511
[11] Wang Z L, Zhou M, Gao C Y, Zhang W 2012 Chin. Phys. B 21 064202
[12] Tetsu S J, Luis R, Makoto A 2008 IEEE Trans. Anten. Propag. 56 3714
[13] He G Y, Lu C C, Hong J C, Deng H 2006 Calculation and Measurement of Electromagnetic Scattering (Beijing: Beijing University of Aeronautics and Astronautics Press) pp224-233 (in Chinese) [何国瑜, 卢才成, 洪家才, 邓晖 2006 电磁散射的计算和测量 (北京: 北京航空航天大学出版社) 第224–233页]
[14] Rius J M , Ferrando M, Jofre L 1993 IEEE Trans. Anten. Propag. Mag. 35 7
[15] Yang Z L 2002 Ph. D. Dissertation (Nanjing: Nanjing University of Science and Technology) (in Chinese) [杨正龙 2002 博士学位论文 (南京: 南京理工大学)]
[16] Xu C 2009 M. S. Dissertation (Nanjing: Nanjing University of Science and Technology ) (in Chinese) [徐翠 2009 硕士学位论文 (南京: 南京理工大学)]
[17] Tetsu S J, Luis R, Makoto A 2006 Proceedings of Antennas and Propagation Society International Symposium (New York: Institute of Electrical and Electronics Engineers) pp1873-1876
[18] Nie Z P, Fang D G 2009 Target and Environment Electromagnetic Scattering Modeling: Theory (Beijing: National Defense Industry Press) pp202-228 (in Chinese) [聂在平, 方大纲 2009 目标与环境电磁散射特性建模理论 (北京: 国防工业出版社) 第202–228页]
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[1] Li X F, Xie Y J, Wang P, Yang R 2008 Acta Phys. Sin. 57 2930 (in Chinese) [李晓峰, 谢拥军, 王鹏, 杨瑞 2008 物理学报 57 2930]
[2] Wu Z S, Zhang X D, Wu C K 1997 Chin. Phys. Lett. 14 32
[3] Li X F, Xie Y J, Fan J 2009 Acta Phys. Sin. 58 908 (in Chinese) [李晓峰, 谢拥军, 樊君 2009 物理学报 58 908]
[4] Kubicke G, Bourlier C, Saillard J 2008 IEEE Trans. Anten. Propag. 56 3029
[5] Ji W J, Tong C M 2012 Acta Phys. Sin. 61 160301 (in Chinese) [姬伟杰, 童创明 2012 物理学报 61 160301]
[6] Chauviere C, Hesthaven J S, Wilcox L C 2007 IEEE Trans. Anten. Propag. 55 1437
[7] Li J, Guo L X, Zeng H, Han X B 2009 Chin. Phys. B 18 2757
[8] Ma J, Guo L X, Wang A Q 2009 Chin. Phys. B 18 3431
[9] Li Z 2009 Ph. D. Dissertation (Nanjing: Southeast University) (in Chinese) [李茁 2009 博士学位论文 (南京: 东南大学)]
[10] Shi Y L, Zhou Q L, Zhang C L 2009 Chin. Phys. B 18 5511
[11] Wang Z L, Zhou M, Gao C Y, Zhang W 2012 Chin. Phys. B 21 064202
[12] Tetsu S J, Luis R, Makoto A 2008 IEEE Trans. Anten. Propag. 56 3714
[13] He G Y, Lu C C, Hong J C, Deng H 2006 Calculation and Measurement of Electromagnetic Scattering (Beijing: Beijing University of Aeronautics and Astronautics Press) pp224-233 (in Chinese) [何国瑜, 卢才成, 洪家才, 邓晖 2006 电磁散射的计算和测量 (北京: 北京航空航天大学出版社) 第224–233页]
[14] Rius J M , Ferrando M, Jofre L 1993 IEEE Trans. Anten. Propag. Mag. 35 7
[15] Yang Z L 2002 Ph. D. Dissertation (Nanjing: Nanjing University of Science and Technology) (in Chinese) [杨正龙 2002 博士学位论文 (南京: 南京理工大学)]
[16] Xu C 2009 M. S. Dissertation (Nanjing: Nanjing University of Science and Technology ) (in Chinese) [徐翠 2009 硕士学位论文 (南京: 南京理工大学)]
[17] Tetsu S J, Luis R, Makoto A 2006 Proceedings of Antennas and Propagation Society International Symposium (New York: Institute of Electrical and Electronics Engineers) pp1873-1876
[18] Nie Z P, Fang D G 2009 Target and Environment Electromagnetic Scattering Modeling: Theory (Beijing: National Defense Industry Press) pp202-228 (in Chinese) [聂在平, 方大纲 2009 目标与环境电磁散射特性建模理论 (北京: 国防工业出版社) 第202–228页]
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