This paper briefly introduces the basic principles of geometrical theory of diffraction (GTD) and the uniform theory of diffraction (UTD).
简要介绍了几何绕射理论(GTD)和一致性绕射理论(utd)的基本原理。
Based on the uniform geometrical theory of diffraction, the equivalent current is used to calculate the back scattering field for the finite cone.
在一致性几何绕射理论基础上，采用等效电流的方法给出了有限锥体在完全极化平面波照射下后向散射场的散射极化矩阵表示式。
Ray path tracing is a key step to apply geometrical theory of diffraction in solving the problems of high frequency electromagnetic scattering and radiating.
在高性能微波暗室技术设计中，由于静区指标较高，采用一般的几何光学技术不能进行准确计算，因此需采用几何绕射理论技术。
The range of application of uniform geometrical theory of diffraction (UTD) is discussed. It is pointed out that UTD is valid when a source is near the diffraction edge.
讨论了一致性几何绕射理论（UTD）的适用范围，并提出其适合于源离绕射边近的处理方法。
As an effective high frequency method, the uniform geometrical theory of diffraction (UTD) has been widely used for calculating RCS of electrically large complex targets.
在复杂外形的电大尺寸目标的电磁散射特性计算中，由于一致性几何绕射理论(utd)的本身特点所局限，直接计算必然会带来很大的误差。
In this Paper, a summary of Geometrical Theory of Diffraction (GTD) by a curved surface and a straight wedge, and its application to calculation of antenna pattern is given.
本文简要地介绍了曲面及直劈几何绕射理论(GTD)在计算天线方向性中的应用。
The geometrical theory of diffraction (GTD) has been used to calculate the Roll-Plane (Equatorial-Plane) radiation of the one and two vertical monopole elements on the base of the cone.
本文应用几何绕射理论(GTD)，计算了圆锥底上一元和二元垂直单振子滚动面(赤道面)的辐射图。
In design of anechoic chamber with higher quality, when requirements of quiet zone index are higher, it must use the geometrical theory of diffraction instead of the geometrical optics for accuracy.
在高性能微波暗室技术设计中，由于静区指标较高，采用一般的几何光学技术不能进行准确计算，因此需采用几何绕射理论技术。
From the theory of light diffraction and geometrical optics, aperture diffraction near the focal plane of microscope objectives and imaging on the image plane are studied.
从光的衍射理论和几何成象理论出发，分析研究了显微物镜焦平面附近小孔光栏的衍射和象平面位置上的成象。
For infrared optical systems a point spread function is calculated in terms of the spot diagram obtained through geometrical ray trace or the theory of Kirchhoff diffraction.
对红外光学系统，用几何光线追迹得到点列图或用基尔霍夫衍射理论计算得到点扩散函数。
The propagation properties of the bottle beam were described based on geometrical optical theory, interferential theory and diffraction theory.
分析几何光学理论、干涉理论和衍射理论对局域空心光束传输特性的描述。
The propagation properties of the bottle beam were described based on geometrical optical theory, interferential theory and diffraction theory.
分析几何光学理论、干涉理论和衍射理论对局域空心光束传输特性的描述。
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