聚焦法

阐述了用聚焦法在菲涅尔区测试相控阵天线的理论依据及实现方法，用实验结果对近远场方向图进行了比较。

There are many methods to measure the pattern of phased array antenna , such as the technique of plane scanning in near field , focusing method in Fresnel zone , general method in far field , etc.

目前，该技术主要应用于：（1）CFP两步聚焦法偏移；（2）叠前深度偏移速度模型的建立；

Application of CFP method includes : ( 1 ) CFP migration , ( 2 ) Building velocity depth model for pre stack depth migration ;

超声振动透镜聚焦法激光打孔

Investigation on Laser Driling with Focusing of Ultrasonic Vibration Lens SPLIT-PHASE METHOD

发光二极管光柱显示器准光柱聚焦法激光打孔的研究

LED Bar Graphic Display Investigation on laser drilling with focusing of quasi-light column

准光柱聚焦法激光打孔的研究

Investigation on laser drilling with focusing of quasi-light column

它利用激光点状聚焦法实现表面质量测量。

It applies the method of focusing the laser spot to realize the measurement of the surface quality .

提出了超声振动透镜聚焦法打孔的新的原理和方法。

The paper presents a new principle and method on laser drilling with focusing of ultrasonic vibration lens .

试验证明，激光打孔的精度和稳定性优于一般光锥聚焦法打孔。

As proved by experiment , the accuracy and the stability of laser drilling are better than those of the common focusing of the light cone .

并开发出一套集机械、控制、计算机应用于一体的适合超声聚焦法治疗肿瘤的无损测温系统。

A set of noninvasive thermometry system is developed which includes mechanism , controls , application of computer . The system is specifically designed for the HIFU therapy .

聚焦法能较好地用梯度透镜剖面折射率分布的测量中是一种装置简单测量迅速的测试方沾。

The focussing method can well be used to measure the refractive index profile of gradient lens and equipment used is very simple and the measurement can be very quickly finished with this method .

本文提出一种测定膜厚的新方法&光学显微镜二次聚焦法，即用光学显微镜二次聚焦直接测出微胶囊内、外径而得膜厚。

In this paper a new way , optical microscope double focus method is proposed , that is , to determine membrane thickness through direct testing of interior and outer diameters of microcapsules by optical microscope double focus .

计算机立体视觉技术主要有双像合成法、莫尔条纹法、傅立叶变换轮廓法、位相测量法、三角测距法、聚焦法、飞行时间法和光谱法。

Computer stereo vision technique can be mainly described as two images combination , Moire contouring , Fourier transform profilometry , phase measuring profilometry , active triangulation , range form focus , time of flight and spectrum project method .