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As one of strong scattering sources of planes, assessing accurately the characteristic of radar cross-section (RCS) about inlets is still hot in investigation into computational electromagnetics. An iterative physical optics method, which an impedance boundary condition and forward-backward method are added to, is studied and a box-segmentation method of blanking off is proposed. It can compute accurately the electric magnetic current distribution on the wall and the RCS. What is more, by developing a kind of software which can be verified by the relevant examples, the RCS characteristic of any metal or dielectric cavity can be evaluated. On this basis, using the software, the numerical simulation about the metal/coated medium S-diffuser with rectangular shape is carried out, and the RCS variational regulation of diffuser under an incident wave length in 0.03 m is obtained. The improved iterative physical optics method is applicable to the design of any cavity and the study of coating absorbing materials, therefore the design cycle is shortened.
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Keywords:
- S diffuser /
- electromagnetic scattering /
- iterative physical optics /
- impedance boundary conditions
[1] Wang H Q, Cheng X Q 2003 Materials Review 9 170 (in Chinese) [王海泉, 陈秀琴 2003 材料导报 9 170]
[2] Zhang W D, Feng X Y, Meng X L 2000 Aerospace Materials and Technology 3 1 (in Chinese) [张卫东, 冯晓云, 孟秀兰 2003 宇航材料工艺 3 1]
[3] Shi L, Guo R W 2007 Acta Aeronautica et Astronautica Sinica 28 1296 (in Chinese) [石磊, 郭荣伟 2007 航空学报 28 1296]
[4] Shi L, Guo R W 2008 Acta Aeronautica et Astronautica Sinica 29 1098 (in Chinese) [石磊, 郭荣伟 2008 航空学报 29 1098]
[5] Obelleiro-Basteiro F, Rodriguez J L, Burkholder R J 1995 IEEE Trans. Antennas Propagat. 43 356
[6] Araújo M G, Obelleiro F, Rodriguez J L 2002 Wireless Personal Communications 20 237
[7] Obelleiro F, Araujo M G, Rodriguez J L 2001 Micro. Opt. Tech. Lett. 28 21
[8] Burkholder R J, Lundin T 2005 IEEE Trans. Antennas Propagat 53 793
[9] Holliday D, de Raad L L, St-Cyr G J 1996 IEEE Trans. Antennas Propagat 44 722
[10] Tadokoro M, Hongo K 2002 IEICE Trans. Electron. 85 1692
[11] Barth T J 1993 Aerospace Sciences Meeting and Exhibit, 31st, Reno, NV, Jan. 11-14, 1993 668
[12] Barth T J, Samuel W L 1995 Aerospace Sciences Meeting and Exhibit, 33rd Reno, NV, Jan. 9-12, 1995 p221
[13] Henmon R, Pouliguen P, He H, Saillard J, Damiens J F 2008 IEEE Trans. Progress in Electromagnetic Research 80 77
[14] Wu Q, Zhong Y C, Hu J, Yu S Z 2009 IEEE Asia-Pacific Power and Energy Engineering Conference Wuhan, China, Mar. 28-30, 2009 p839
[15] Wu Q, Zhong Y C, Yu S Z, Hu J 2009 Chinese Journal of Computational Physics 26 60 (in Chinese) [吴晴, 钟易成, 余少志, 胡骏 2009 计算物理 26 60]
[16] Gong Y M 2008 Journal of Magnetic Materials and Devices 6 28 (in Chinese) [巩英明 2008 磁性材料与器件 6 28]
[17] He S, Xiong K M 1993 Journal of Aeronautical Materials 14 43 (in Chinese) [何山, 熊克敏 1993 航空材料学报 14 43]
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[1] Wang H Q, Cheng X Q 2003 Materials Review 9 170 (in Chinese) [王海泉, 陈秀琴 2003 材料导报 9 170]
[2] Zhang W D, Feng X Y, Meng X L 2000 Aerospace Materials and Technology 3 1 (in Chinese) [张卫东, 冯晓云, 孟秀兰 2003 宇航材料工艺 3 1]
[3] Shi L, Guo R W 2007 Acta Aeronautica et Astronautica Sinica 28 1296 (in Chinese) [石磊, 郭荣伟 2007 航空学报 28 1296]
[4] Shi L, Guo R W 2008 Acta Aeronautica et Astronautica Sinica 29 1098 (in Chinese) [石磊, 郭荣伟 2008 航空学报 29 1098]
[5] Obelleiro-Basteiro F, Rodriguez J L, Burkholder R J 1995 IEEE Trans. Antennas Propagat. 43 356
[6] Araújo M G, Obelleiro F, Rodriguez J L 2002 Wireless Personal Communications 20 237
[7] Obelleiro F, Araujo M G, Rodriguez J L 2001 Micro. Opt. Tech. Lett. 28 21
[8] Burkholder R J, Lundin T 2005 IEEE Trans. Antennas Propagat 53 793
[9] Holliday D, de Raad L L, St-Cyr G J 1996 IEEE Trans. Antennas Propagat 44 722
[10] Tadokoro M, Hongo K 2002 IEICE Trans. Electron. 85 1692
[11] Barth T J 1993 Aerospace Sciences Meeting and Exhibit, 31st, Reno, NV, Jan. 11-14, 1993 668
[12] Barth T J, Samuel W L 1995 Aerospace Sciences Meeting and Exhibit, 33rd Reno, NV, Jan. 9-12, 1995 p221
[13] Henmon R, Pouliguen P, He H, Saillard J, Damiens J F 2008 IEEE Trans. Progress in Electromagnetic Research 80 77
[14] Wu Q, Zhong Y C, Hu J, Yu S Z 2009 IEEE Asia-Pacific Power and Energy Engineering Conference Wuhan, China, Mar. 28-30, 2009 p839
[15] Wu Q, Zhong Y C, Yu S Z, Hu J 2009 Chinese Journal of Computational Physics 26 60 (in Chinese) [吴晴, 钟易成, 余少志, 胡骏 2009 计算物理 26 60]
[16] Gong Y M 2008 Journal of Magnetic Materials and Devices 6 28 (in Chinese) [巩英明 2008 磁性材料与器件 6 28]
[17] He S, Xiong K M 1993 Journal of Aeronautical Materials 14 43 (in Chinese) [何山, 熊克敏 1993 航空材料学报 14 43]
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