| 二维变密度声波波动方程的衍射层析成像 |
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| 引用本文： | 吴春玲 张霖斌. 二维变密度声波波动方程的衍射层析成像[J]. CT理论与应用研究, 1994, 3(2): 5-10 |
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| 作者姓名： | 吴春玲 张霖斌 |
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| 作者单位： | 中国地质科学院岩石圈研究中心，中国地质大学物探系 |
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| 摘 要： | 本文将二维声波衍射层析成像原理推广到二维变密度声波波动方程中，导出了在线源激发条件下，不同观测系统的滤波反传播重建算法，取两个以上不同频率值可得到密度和体积模量的成像．数值实例表明，该方法能得到密度和体积模量较满意的成像。
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| 关 键 词： | 衍射CT 密度 声波波动方程 地震波 |
Diffraction Tomography of Two-Dimensional Variable Density Acoustic Wave-equation |
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| Wu Chunling, Zhang Linbin. Diffraction Tomography of Two-Dimensional Variable Density Acoustic Wave-equation[J]. Computerized Tomography Theory and Applications, 1994, 3(2): 5-10 |
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| Authors: | Wu Chunling Zhang Linbin |
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| Abstract: | In this paper,the theory for diffraction tomography of two-dimensional acoustic wave-equation is extended to 2D variable density acoustic wave-equation.Filtered back Propagation algorithm for different cases of measurements in line sources are derived.With more than two different frequencies,density and bulk modulus Can be imaged.NumeriCal examples show that satisfied images can be obtained through the algorithnl presented in this paper. |
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| Keywords: | s:Diffraction tomography Filtered back propagation algorithm Density Bulk modulus. |
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