| 在具有相关性的离散随机介质中波场的二阶矩 |
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| 引用本文： | 曾文 张训械. 在具有相关性的离散随机介质中波场的二阶矩[J]. 电波科学学报, 1997, 12(3): 260-268 |
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| 作者姓名： | 曾文 张训械 |
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| 作者单位： | 中国科学院武汉物理与教学研究所!武汉，430071，中国科学院武汉物理与教学研究所!武汉，430071 |
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| 摘 要： | 利用建立在多次散射基础上的Ｄｙｓｏｎ方程和Ｂｅｔｈｅ－Ｓａｌｐｅｔｅｒ方程，讨论了在考虑随机分布的散射间的对相关而忽略高阶相关的情况下标量波声波场的传播问题。认为在波传播方向散射体的相关性具有马尔科夫近似，同时运用前向散射近似，得到了在相关性离散随机介质中的等效传播常数，吸收截面和互相干函数的解析解。
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| 关 键 词： | 相关性 随机介质 等效传播常数 二阶矩 |
The Second-Order Moment of Electromagnetic Waves for Random Distributed Discrete Scatterers with Pair-Correlations |
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| Zeng Wen,Zhang Xunjie. The Second-Order Moment of Electromagnetic Waves for Random Distributed Discrete Scatterers with Pair-Correlations[J]. Chinese Journal of Radio Science, 1997, 12(3): 260-268 |
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| Authors: | Zeng Wen Zhang Xunjie |
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| Abstract: | Utilizing the Dyson and Bethe-Sa1leter equation on the basis of multip1e scattering,this paper discusses the scalar waves propagation in the random discrete scatterers while only Pair-cor-relations are considered and all contribution from high-order correlations are neglected. Assmpting the pair correlations have Markov approach in the propagation direction and using forward scattering approximation,we obtain the effective propagation constant,absorption cross sections and the ana-lytical soution of second-order coherence function (second-order moment). |
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| Keywords: | Random scatterer with correlation Effective propagation constant Second-order moment |
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