phase-shift method

Stretching Deformation Analysis of Biology Membrane Material by Interferometry Phase-shift Method

生物膜材料张力形变干涉相移法的分析

Discovered τ - p method and phase-shift method effect is good , more close to the theoretical results .

发现τ-p法、相移法的效果较f-k法好，更加较为贴近理论正演结果，实际应用中应作为首选方法。

Study on Some Problems in Measurement of Dispersion of Monomode Optical Fiber by Phase-Shift Method

相移法测量单模光纤色散特性的探讨

Topography Measured by Means of the Moire Phase-shift Method

莫尔条纹相移技术测面形分布

The simulated experiments are studied with this method and traditional phase-shift method , the result shows that this method has better accuracy .

对该方法与传统相移技术进行了模拟比较实验，结果表明，该方法具有较高的精度。

To extracting frequency dispersion curves , introduced and realized fulfill the three methods : f-k method ,τ - p method and phase-shift method .

在提取频散曲线方面介绍并实现了三种方法：f-k法、τ-p法、相移法。

In this thesis , we develop an applicable fiber grating dispersion measurement system based on frequency-domain phase-shift method , making it work automatic and programmable .

本文设计了一个实用的光纤光栅色散自动测量系统，以频域相移法为基础，将测量设备组合成一个整体，实现了光纤光栅色散测量的自动化。

The influence of CCD noise on optical measurement tasks , such as edge location and phase extraction of structural-light phase-shift method , is investigated .

结合精密图像测量任务，分别研究了暗电流噪声和随机噪声对一维边缘定位、结构光相移法相位提取的影响。

The application of acoustic equation and phase-shift method to the prestack migration of P-SV wave can effectively resolve its kinematic problem and guarantee its image accuracy .

本文采用声学方程及相移法对P-SV波进行叠前偏移，可以高效率地处理转换波的运动学问题，而且能保证成像精度。

In the light of the high requirement on adhesion by the metro vehicles in Beijing , the adhesion control scheme based on phase-shift method is proposed to realize optimum adhesion via the judgment and control of adhesion performance curve ratio . Basic principles are stated .

针对北京地铁车辆对粘着利用提出的较高要求，提出了通过对粘着特性曲线斜率的判别和控制来实现最佳粘着利用的基于相位法的粘着控制方案，并阐述了它的基本原理。

System structure and algorithm used in the measurement of 3D surface profile are presented while using the light bulb phase-shift interfering method .

提出了用白光相移干涉法进行三维表面轮廓测量应采用的系统结构和算法。

Measurement of SIF of transparent material by using a technique integrated phase-shift ESPI method with holography photoelastic method

电子散斑和全息光弹混合方法测量透明材料的应力强度因子

Phase-shift migration method was used to deal with the profiles , and the resolution of profiles were enhanced greatly .

采用相位移偏移方法对正演剖面进行了处理，提高了正演剖面的分辨率。

A phase-shift analysis method was designed based on image gray-scale , which used probabilistic segmentation . The phase shift is got by calculating the mean of the great probability region through the whole data .

2设计了一种基于图像灰度的相移分析法，该法用概率细分思想，从全场数据概率极大值区域获得均值，以此确定相移量。

By analyzing several modulating method and comparing their advantages and shortcomings , the controller adopts the carrier level phase-shift modulating method at last , and analyzed the SPWM pulse width computing method theoretically .

论文中通过对几种调制方法的分析，对比他们优缺点，最终决定采用载波水平移相SPWM调制，并从理论上分析了SPWM脉冲宽度的计算方法。

The 3-D Shape Measurement with Phase-Shift and Logical Moire Method

相移逻辑云纹法用于三维物体面形测量

Based on the operational theory of digital phase-shift counting , the method of measuring both the pulse frequency and pulse width of broadband narrow-pulses at the same time is proposed here .

本文以数字移相计数法为理论基础，提出了一种可同时完成宽带窄脉冲信号频率和脉宽测量的设计方案。

The Analysis of the Phase-Shift Error of the PMP Phase-Shift Device Using FFT Method

利用快速傅立叶变换分析PMP相移机构的相移误差

Phase-shift downward extrapolation and finite-difference downward extrapolation preserves the advantage of phase-shift method and finite-difference method . So FFD migration method is an effective scheme .

FFD算法既保持了相移法的精确性，又可以处理剧烈横向变速问题，在一定程度上克服了相移法偏移和有限差分法偏移的缺点，是一种比较有效的偏移方法。