含源多層弱起伏介質(zhì)中的電磁場(chǎng)
THE COMPUTATION OF ELECTROMAGNETIC FIELD IN WEAK FLUCTUATING MULTILAYERED MEDIA WITH SOURCE
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摘要: 本文在Born近似下提出了求解含源多層隨機(jī)介質(zhì)的電磁場(chǎng)的并矢格林函數(shù)方法。激發(fā)源可以在N層隨機(jī)介質(zhì)中的任意一層。在背景介質(zhì)的任一層均為各向同性慢變分層的假定下,利用W.K.B近似及電型和磁型并矢格林函數(shù),導(dǎo)出了N層介質(zhì)中任意一層中的平均場(chǎng)和起伏場(chǎng),并用反射系數(shù)、透射系數(shù)、阻抗、電導(dǎo)和波數(shù)比等物理量表示。Abstract: Based on the Born approximation, an analytical theory for computing the electromagnetic field in weak fluctuating multilayered media with source is developed. In the theory, the source can be placed in an arbitrary layer among N-layers of the media. On the assumption that every layer among N-layers of the background media is isotropic and varies sufficiently slowly along the vertical position, the average and scattering fields represented by their reflection cofficients, transmission coefficients, impedances and wave number ratios are obtained by W. K. B method and the dyadic Green's function of electric and magnetic typed.
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李樂偉,焦培南,電波科學(xué)學(xué)報(bào),1986年,第2期,第10-25頁.[2]李樂偉,焦培南,含源多層弱起伏介質(zhì)中電磁場(chǎng)的積分解,1986年電波傳播學(xué)術(shù)年會(huì)論文摘要集,西安,1986年,第217-219頁.[3]L. Tsang, J. A. Kong, Radio Sci, 11(1976), 595-598.[4]G. P. S. Cavalcante, D. A. Rogers, A. J. Giardola, Radio Sci., 17(1982), 503-508. -
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