頻域Mur條件差分近似的構(gòu)造和應(yīng)用
FINITE-DIFFERENCE APPROXIMATIONS IN FREQUENCY-DOMAIN FOR MUR S CONDITIONS AND ITS APPLICATIONS
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摘要: 本文構(gòu)造了Mur條件的頻域有限差分近似。結(jié)合推導(dǎo)的非均勻、各向異性媒質(zhì)中有限差分方程,可以有效、方便地計算電大尺寸復(fù)雜媒質(zhì)體的電磁散射問題。運用稀疏矩陣壓縮存貯技術(shù)和迭代求解算法,大大減少了所占用的計算機(jī)內(nèi)存,與矩量法相比計算時間也大為減少。文中計算了幾種媒質(zhì)情況上圓柱和方柱的雷達(dá)散射截面,并與已有數(shù)據(jù)作了比較,結(jié)果一致性較好。
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關(guān)鍵詞:
- 差分近似; Mur條件; 電磁散射; 有限差分法; 矩量法; 雷達(dá)散射截面
Abstract: Novel finite-difference approximations of Mur s conditions are presented in frequency-domain. Combined with the FD-FD equations deduced, the new conditions are convenient and effective to solve EM problems of inhomogeneous anisotropic media. By use of the compressed storage sparse matrix technique and iteration algorithm, the computer memories demanded are decreased and the CPU time is shortened compared with those obtained by moment method (MM). RCS of cylinders and rectangular posts are given with several kinds of media. The results of cylinder are in good agreement with those of MM. -
Mekewether D E. IEEE Trans. on EMC, 1971, EMC-13(1): 41-44.[2]Kunz K S, Lee K M. IEEE Trans. on EMC, 1978, EMC-20(2): 328-333.[3]Yee K S. IEEE Trans. on AP, 1966, AP-14(5): 302-307.[4]Taylor C D, Lam D H, Shumpert T H. IEEE Trans. on AP, 1969, AP-17(9): 585-589.[5]Taflove A, Brodwin M E. IEEE Trans. on MTT, 1975, MTT-23 (8): 623-630.[6]Mur G. IEEE Trans. on EMC, 1981, EMC-23(4): 377-382.[7]Canning F X. IEEE Trans. on AP, 1990, AP-38(5): 740-745.[8]Jin J M, Vohskis J L, Liepa V V. IEEE Trans. on AP, 1989, AP-37(1): 118-123.[9]Areadt S, Umashadcar K R, TaBove A, et al. IEEE Trans. on AP, 1989, AP-38(7): 1551-1558.[10]Jankovic D J, Chang D C, Dunn J M, et al. IEEE Trans. on AP, 1993, AP-42(9): 1215-1222.[11]Sun W, Balanis C A. IEEE Trans. on AP, 1993, AP-42(5): 627-632. -
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