高频近似下新月形导体的散射场计算和散射体轮廓的投影重建
THE CALCULATION OF THE SCATTERED FIELD PRODUCED BY A CRESCENTLIKE CONDUCTOR UNDER HF APPROXIMATION AND THE CONTOUR PROJECTION
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摘要: 本文研究了高频条件下一个三维新月形导电物体的电磁散射远场的计算问题。在计算中我们根据物理光学和Fock理论得到散射体表面的等效面电流分布,并引入一沿边缘的线电荷分布以计入边缘的贡献。计算结果用于散射体轮廓的投影重建获得成功。Abstract: The calculation of the scattered far-zone EM field produced by a crescentlike three-dimensional conductor under HF approximation is studied. The equivalent surface current distributions used in the calculation are obtained from the physical optics and Fock s theory. To take account of the contribution of the edge, a line distribution of charge along it is introduced. The calculated field data are applied to reconstruct the contour projections of the scatterer successfully.
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冯孔豫,冯思民.电子科学学刊,1995, 17(1): 98-102.[2]Fock V A. Electromagnetic diffraction and propagation problems. New York: Pergamon, 1965, Part 1, Chap.2.[3]Silver S. Microwave antenna theory and design. MIT Radiation Laboratory Series. New York: McGraw-Hill, 1949, Vo1.12, Chap.S.[4]Stratton J A. Electromagnetic theory. New York: McGraw-Hill, 1941, Chap.8.[5]James G L. Geometrical theory of diffraction for electromagnetic waves. London: Peter Peregrinus Ltd., 1980, Chap.2.[6]任朗.天线理论基础.北京:人民邮电出版社,1980,第十三章. -
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