The problem of parameter inversion in inhomogeneous medium was studied and a generalized ray approximation method to inverse 2-d medium parameters was introduced in this paper.
对非均匀介质参数反演问题进行了研究，并提出了用于反演二维介质参数的广义射线近似方法。
According to the ray optics, the imaging properties of optical arrays areanalysed. A general imaging transfer matrix including a special case:paraxial ray approximation is obtained.
由非傍轴光线光学理论出发，分析了光学元件列阵的成像特性，得到了普适的成像特性变换矩阵，该结论自动地包含了傍轴近似的情形。
Based on complex ray method, a paraxial approximation analysis of Gaussian beam transmission through a dielectric radome is presented.
本文根据复射线法对通过介质天线罩的高斯波束场进行近轴近似分析。
In this paper, it is analyzed the propagation of a Gaussian beam in fiber media with ray tracing under the paraxial approximation.
利用光线追踪方法在近轴近似下模拟了高斯光束在不同折射率分布纤维状介质中的传播。
Numerical computations show that paraxial approximation gives almost the same accuracy in the paraxial region as complex ray method but spends much less computer time.
所得数字结果表明，在波束的近轴区域内为获得同样的计算精度，近轴近似法所需要的计算机时间远小于复射线追综法的时间。
Then, with some approximation to the wave front section, the forward modeling can be achieved through the ray tracing method based on the minimum traveling time and the shortest traveling trace assum.
然后，对波阵面作一近似，在此基础上，用最小走时最短路径射线追踪法完成正演。
Numerical computations show that paraxial approximation gives almost the same accuracy in the paraxial region as complex ray method but spends much...
所得数字结果表明，在波束的近轴区域内为获得同样的计算精度，近轴近似法所需要的计算机时间远小于复射线追综法的时间。
The electromagnetic transmission performance of a 2-D cylindrical magnetic radome is analyzed by complex ray paraxial approximation method in this paper.
利用复射线近轴近似法分析二维圆柱形磁性天线罩的电磁传输特性。
Objective to determine the approximation of backscatter property of human body by stimulation phantoms commonly used in medical diagnostic X-ray dosimetry.
目的确定在医用诊断X射线剂量学中常用模体的反散射特性与人体反散射特性的近似程度。
A comparison between the wave and ray models shows that the ray model gives an approximation of the transmission loss in an acoustic vector field.
经过与波动理论的比较，说明该模型仅是矢量声场传播损失的简单近似。
In addition, the ray effect in the spherical harmonics approximation mitigates with increasing optical thickness within gray medium.
同时，球谐函数法的射线效应随光学厚度的增加而减小。
In addition, the ray effect in the spherical harmonics approximation mitigates with increasing optical thickness within gray medium.
同时，球谐函数法的射线效应随光学厚度的增加而减小。
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