用于計(jì)算任意截面二維電磁散射的多心柱諧函數(shù)展開法
MULTI-CENTER CYLINDRICAL HARMONIC FUNCTION EXPANSION METHOD FOR COMPUTING THE ELECTROMAGNETIC SCATTERING BY TWO-DIMENSIONAL CYLINDER OF ARBITRARY CROSS-SECTIONS
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摘要: 本文提出了一種計(jì)算任意截面二維電磁散射的方法多心柱諧函數(shù)展開法。它用多點(diǎn)的柱諧波函數(shù)展開散射場(chǎng),代替柱諧函數(shù)展開中一點(diǎn)展開,并用最小均方邊界誤差準(zhǔn)則處理邊界條件。多極子法和柱諧函數(shù)展開法是該方法的兩個(gè)特例。
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關(guān)鍵詞:
- 電磁散射; 柱諧函數(shù)展開; 最小均方邊界誤差
Abstract: Multi-center cylindrical harmonic function expansion method is introduced for formulating the two-dimensional scattering problems in which the scattered fields are represented in an expansion terms of the cylindrical harmonic functions at some proper points. The boundary conditions are applied at the surface of the scatterer and are satisfied using point-matching. It is shown that the generalized multipole technique and the cylindrical harmonic function expansion method are two special cases of this method. The solution for the coef- ficients of the series are obtained by inversion of an overdetermined matrix equation by least square method. -
P.M. Vandenberg et al., IEEE, Trans, on AP, AP-27(1979)5, 577-583.[2]D. R. Wilton, R. Mittra, IEEE Trans. on AP, AP-20(1972)3, 310-317.[3]V. Levotam et al., IEEE Trans. on .AP, AP-35(1987)10, 1119-1127.[4]M. G. Andreaaen, IEEE Trans. on AP, AP-12(1964)6, 746-754. -
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