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分离纵波和横波的偏振旋转法 被引量:18
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作者 李英康 崔作舟 《地球物理学报》 SCIE EI CSCD 北大核心 1994年第A02期372-382,共11页
本文依据地震波的偏振特征和最小化方法,由三分向记录的协方差矩阵的特征值确定偏振参数(椭圆率、线性因子等),设定旋转记录的滤波因子、增强有效信号和压制面波等干扰信号;并由协方差矩阵的特征向量确定不同偏振波性质(纵波、横... 本文依据地震波的偏振特征和最小化方法,由三分向记录的协方差矩阵的特征值确定偏振参数(椭圆率、线性因子等),设定旋转记录的滤波因子、增强有效信号和压制面波等干扰信号;并由协方差矩阵的特征向量确定不同偏振波性质(纵波、横波等)及其旋转方向;建立新的线性组合,把纵波旋转到垂直分量,按其偏振特点与传播方向间的关系把两个横波分别旋转到径向和切向分量,最终得到纵波、横波分离的记录和偏振参数(椭圆率角、主偏振平面).从新构成的图像能够有效地识别地震记录中的横波震相及横波分裂. 展开更多
关键词 地震勘探 纵波 横波 偏振旋转法 地震波
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Accurate Jones Matrix of the Practical Faraday Rotator
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作者 王林斗 祝昇翔 +2 位作者 李玉峰 邢文烈 魏景芝 《Transactions of Tianjin University》 EI CAS 2003年第3期198-201,共4页
The Jones matrix of practical Faraday rotators is often used in the engineering calculation of non-reciprocal optical field. Nevertheless, only the approximate Jones matrix of practical Faraday rotators has been prese... The Jones matrix of practical Faraday rotators is often used in the engineering calculation of non-reciprocal optical field. Nevertheless, only the approximate Jones matrix of practical Faraday rotators has been presented by now. Based on the theory of polarized light, this paper presents the accurate Jones matrix of practical Faraday rotators. In addition, an experiment has been carried out to verify the validity of the accurate Jones matrix. This matrix accurately describes the optical characteristics of practical Faraday rotators, including rotation, loss and depolarization of the polarized light. The accurate Jones matrix can be used to obtain the accurate results for the practical Faraday rotator to transform the polarized light, which paves the way for the accurate analysis and calculation of practical Faraday rotators in relevant engineering applications. 展开更多
关键词 polarized light Jones matrix Faraday rotator Jones vector
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