射线理论（ray theory） 描述声场是由射线来传递声能量的，从声源出发的射线按一定的路径行走而到达接收点，其声场是所有到达射线的叠加结果。
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asymptotic ray theory 渐近射线理论
light ray theory 光线理论
ghost ray theory 虚拟射线理论
direct ray theory 直射线理论
complex ray theory 复射线理论
Seismic Ray Theory 地震射线理论
acoustic ray theory 声线理论
ray theory of electromagnetic wave 电磁波射线理论
ray path theory 波径论
Several underwater acoustic channel models are investigated, the emphases isplaced on the features of acoustic ray theory model and on its feasibility inpractical use for real sea environments.
作者在论文中所做的研究工作及创新点包括一下几个方面：1．研究了目前常用的几种数值水声场信道模型，着重分析了声线理论模型的特点及其在建立海洋声场环境模型中的应用可行性。
参考来源 - 基于声线理论的水声信道传播特性研究In this dissertation, the sound field was computed with Gaussian ray bundle method which based on ray theory. The Gaussian ray bundle is an improvement of Gaussian beam.
本文以射线声学为理论基础，采用高斯射线束方法来对声场进行计算，高斯射线束方法源于对高斯波束方法的改进。
参考来源 - 海底参数反演技术研究Besidesthat ray theory is helpful to calculate three-dimensional sound field, and theinversion of sound field could be finished quickly enough to realize the detectionof ocean environment in wide area.
特别是射线理论对．解三维声场尤为方便，它将有望实现三维声场的快速计算和声场的反演，达到海详环境的监测目的。
参考来源 - 基于射线理论的匹配场声源定位研究Second, the formula for average intensity of ocean reverberation is deduced on the basis of Ray theory for monostatic case, then it is proved by computer simulation.
然后从分层介质的射线声学理论出发导出倾斜海底收发合置海底混响平均强度的近似表达式,并对其进行数值分析。
参考来源 - 三维环境海洋混响强度衰减规律研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Complex ray theory, based on geometrical optics, has been found to have many applications in areas of laser, microwave, acoustics, seismology etc.
以几何光学为基础的复射线理论已在激光、微波、声学和地震波等学科领域获得了广泛应用。
The complex ray theory provides a simple and useful approach to analyze the propagation and scattering of HF EM waves in various complicated environments.
复射线理论为高频电磁波在各种复杂环境中的传播和散射提供了一种简便而有效的分析方法。
Gaussian beam method is essentially a seismic forward modeling method that combines wave equation and ray theory.
高斯射线束方法是将波动方程和射线理论相结合的一种地震正演模型方法。
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