| 复杂介质的射线轨迹计算 |
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| 引用本文： | 李丽. 复杂介质的射线轨迹计算[J]. 燕山大学学报, 2005, 29(2): 186-188 |
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| 作者姓名： | 李丽 |
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| 作者单位： | 燕山大学,理学院,河北,秦皇岛,066004 |
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| 基金项目： | 国家自然科学基金资助项目(No. 40374048) |
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| 摘 要： | 从声波波动方程出发，在波动理论的高频近似下，导出了有限差分射线走时计算方法，并利用声传播的可逆性和费马原理建立射线路径，经理论模型验证，证明了该方法的正确有效性。
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| 关 键 词： | 轨迹计算 复杂介质 波动方程 高频近似 波动理论 计算方法 有限差分 射线路径 费马原理 模型验证 可逆性 声传播 声波 |
| 文章编号： | 1007-791X(2005)02-0186-03 |
| 修稿时间： | 2004-12-20 |
Calculation of ray tracing in complicated medium |
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| LI Li. Calculation of ray tracing in complicated medium[J]. Journal of Yanshan University, 2005, 29(2): 186-188 |
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| Authors: | LI Li |
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| Abstract: | Inthis paper, a method is developed for solving the acousticwave equationwith ray tracing technique. It bases on acoustic wave equation and the condition of high frequency approximation. The acoustic wave that is emitted in practice is characteristic of limited frequency band, it is consider in this algorithm, so the wave ray is substituted by wave path. In order to avoid caustics phe- nomenon the amplitude is calculated in phase space. This method overcomes the disadvantage of usual ray tracing technique that the caustics and shade of ray are easy to appear in complicated medium. Tests show it is effective. |
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| Keywords: | model sound wave ray tracing |
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