The annular aperture white light speckle photography used for measuring deformation and displacement of objects is proposed for the first time.
提出利用环形孔径进行白光散斑照相，测量物体的变形和位移。
The relation between the on-axis spectrum in the far field and the spectrumat the annular aperture is derived when partially coherent light passes throughan annular aperture, The calculated results show that on-axis spectrum in thefar field is not only dependent on S~(o)(ω), but also on coherence at the annularaperture, and the parameters of the annular aperture.
本文推导了部分相干光在经过环形孔径之后,远场轴上点的光谱S(ω)与环形孔径处光的光谱S~(0)(ω)之间的关系。
On the basis of summing up conventional testing methods for asphere,the basic principle of the circular sub-aperture and annular sub-aperture stitching.
在总结了常用检测非球面方法优缺点的基础上提出了利用圆形子孔径、环形子孔径检测非球面的基本原理,并对其步骤的实现、数学模型的建立和拼接算法的开发进行了分析和研究。
Layout model and analysis of annular subaperture stitching technique for testing large aspheric mirror;
环形子孔径拼接检测大口径非球面镜的规划模型及分析
Testing the large aspheric mirror using annular subapertures;
使用环形子孔径拼接检测大口径非球面镜
Annular subaperture test method has been developed for low cost and flexible measurement of large,fast aspheric surfaces without any special elements.
环形子孔径法是一种无需辅助元件就能实现对大口径、大相对口径非球面检测的“柔性”测试技术。
Mathematical model and simulation for testing aspheric surface by annular subaperture stitching interferometry;
环形子孔径拼接干涉检测非球面的数学模型和仿真研究
In order to satisfy high precision and fast optical surface measuring,an iterative algorithm for annular subaperture stitching is discussed based on the Subaperture Stitching and Localization(SASL) algorithm.
研究了该算法在环形子孔径拼接测量中出现的如何确定重叠点的问题,并详细介绍了该算法的步骤。
In this paper, Annular aperture cone glass shearing laser speckle photography used for measuring the derivatives of displacements is proposed for the first time.
研制了环形孔径锥镜剪切相机，并利用它进行激光散斑照相，测量物体的位移导数场。
Modeling and Experiment of Testing Asphere by Annular Subaperture Stitching Interferometer
环形子孔径拼接干涉检测非球面的建模与实验
Iterative stitching algorithm for annular subaperture testing and its experimental verification
环形子孔径测试的迭代拼接算法及其实验验证
Data Processing and Calibration for Testing Aspheric Surfaces by Annular Subaperture Stitching Interferometry
环形子孔径拼接检测非球面中的数据处理和标定
Finite Element Analysis on Hole Radius of Circular-Web Opening Steel Beams
圆形开孔梁中开孔半径的有限元分析
Influence of Pore Diameter Distribution on Porous Nickel's Pore Volume Fractal Dimention
孔径分布对多孔镍孔体积分形维数的影响
circular perforated air diffuser
环形穿孔空气扩散器
360°Profilometry by Multi-aperture Overlap-scanning Technique;
多孔径拼接技术实现360°面形测量
Research on Adaptive Beamforming of Towed Array with Large-aperture;
大孔径拖线阵的自适应波束形成研究
Analysis and treatment on pile bore checking collapse accidents of large diameter bored perfusion pile
大口径钻孔扩底灌注桩在孔形检测时的塌孔分析及处理
a small hole or loop (as in a needle).
一个圆形小孔或小线环（比如针眼儿）。
Difference Set Based Methods for Optimal Thinned Circular Arrays in Aperture Synthesis Radiometers
基于差集的综合孔径圆环天线阵稀疏优化方法
Elimination Ways of Dense Blow-Holes Defect on the Double Side Face of Ductile Iron Ring
消除球铁环双端面聚集孔洞缺陷的途径
Simulation of effect on flow by diameter of loop reactor distributor's aperture
环流反应器分布器孔径对流场影响的数值模拟
Study on Structure of Large Diameter Prestressing Allied Circular Inverted Siphon;
大孔径预应力连体式圆形倒虹吸结构研究
Design of Satellite Formation Configuration for Spaceborne Interferometric Synthetic Aperture Radar;
星载干涉式合成孔径雷达卫星编队构形设计
Study of Adaptive Digital Beamforming and Simulation of Interference Environment for SIAR;
综合脉冲与孔径雷达自适应波束形成的研究
Imaging Algorithm of Synthetic Aperture Radar Based on Graphics Processing Unit
基于图形处理器的合成孔径雷达成像算法