您要查找的是不是：
- Fresnel diffraction wave 菲涅尔衍射波
- A new point of view is that if the angle between the normal dir-cetion of incident wave surface and Z axies is smaller, fresnel diffraction for-mation is still tru, and presented. 在此基础上,对费涅耳衍射近似条件作了讨论,提出此近似条件可表达为照明波波面法线与Z轴夹角很小时,费涅耳衍射成立的新论点。
- This paper introduced an optical setup to perform fractional Fourier transformation by Fresnel diffraction with a converging spherical wave illumination. 提出了在会聚球面波照明下，用菲涅耳衍射实现分数傅里叶变换的光学装置。
- The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula. 采用菲涅耳衍射公式和傅里叶变换得出了输出面上的光场的理想计算公式。
- The intensity distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory. 应用菲涅耳衍射光强分布理论以及光轴上光强分布理论对波纹光阑在一定条件下的作用范围进行了分析。
- The intensity ripples of Fresnel diffraction are suppressed and the filling factor is improved by using the serrated aperture. 从光路的实际使用效果看,对比圆孔光阑,应用波纹光阑在其作用范围内实现了对光束衍射调制的抑制和填充因子的提高。
- Minimum Detective Height and Height Measurement Accuracy Use Diffraction Wave Method to Detect a Crack Height. 衍射波法测定裂纹高度时的最小可测高度和高度测试精度。
- Numerical results demonstrate the advantages of super-Gaussian and serrated apertures in suppressing Fresnel diffraction modulations and maintaining relatively large fill factor. 数值计算结果表明,超高斯光阑和锯齿光阑的优点是能有效抑制菲涅尔衍射调制并有较大的填充因子。
- Using our method,the FFT program needs a little of computer memory to finish the calculation of Fresnel diffraction with the arbitrary interval of sampling and the demanded precision. This method can be extended conveniently to Collins? formula. 利用这种方法 ,只要用小容量 FFT程序 ,便能完成任意给定取样间隔或计算精度的菲涅耳衍射及柯林斯公式的计算
- Based on the Fresnel diffraction integral, the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed. 摘要基于菲涅耳衍射积分公式，推导出了会聚球面波通过环形光阑后场分布的解析公式，并讨论了一些特殊情况。
- Based on the theory of fractional Fourier transform (FRT) and one of its very important parameter, fractional order, the relationship between FRT and Fresnel diffraction are deduced and analyzed. 摘要基于分数傅里叶变换理论并以分数阶这一重要参量为纽带，推导和分析了分数傅里叶变换与菲涅耳衍射之间的关系；
- The purplose of this paper is to infer the new analytic formula of complex amplitude of an axial symmetrical diffraction wave field; besides, to grant a physical annotation and to discuss harmony for oneself in view of this analytic formula. 本文导出轴对称衍射波场复振幅分布的一种新形式,尝试性地给出一种物理诠释,将这一分布应用到几种典型的衍射波场区域表现出较好的自洽性。
- The statistical properties of dynamic speckles produced in the Fresnel diffraction field by the rotating cylindrical object considered to be a weak phase screen are investigated in detail. 研究了当旋转圆柱体表面满足弱散射体条件时，在菲涅尔衍射场形成的动态散斑的统计特性；
- Wave theory includes small amplitude wave, finite amplitude wave、solitary wave、cnoidal wave etc.Wave transformation discuses shoaling、refraction、diffraction、wave breaking etc. 波浪理论包括小振幅波、有限振幅波、孤立波、馀摆波等理论推导，波浪变形包括浅化、折射、绕射及碎波等现象解析。
- Basing on the light diffracting theory of Kirchhoff, we obtain the expression for the intensity of speckles in deep Fresnel diffraction region. 摘要利用基尔霍夫衍射理论分析了菲涅耳深区内的散斑场，得到了菲涅耳深区散斑光强的一般表达式。
- The Meaning of the Boundary Diffraction Wave 边界衍射波的意义
- Fresnel diffraction of a plane transmission grating 平面透射光栅的菲涅耳衍射
- Calculation of Fresnel diffraction 衍射计算
- Alternatively, we can image that the incoming wave is diffracted by the object and the resulting diffracted wave is then diffracted again by the objective lens. 换一种方式，我们可以这样想象：入射波被物体反射，所得到的衍射波再一次受到物镜的衍射。
- This paper introduces the geometry offset and diffraction-summation offset technique which can eliminate noise and diffractive wave to improve the echo profile image. 本文主要介绍了探地雷达回波信号处理中的几何偏移和绕射叠加偏移，可用来有效地消除噪声及绕射干扰，使回波剖面清晰、直观的呈现山被测物体。
