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。

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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。

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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。

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