相移误差,error of phase-shifting
1)error of phase-shifting相移误差
1.Theerror of phase-shifting always exists in experiments and it will cause the error in phase reconstruction.重构光场的相位是光学干涉计量的基础和难点,相移技术是其中重要的方法,但相移误差在实验中是很难回避的,从而引起相位重构出现误差,所以如何消除或减少相移误差对相位重构的影响是受普遍关注的问题。
2.After studying the error of reconstructed phase caused by theerror of phase-shifting,we have got the relation between the error of reconstructed phase and phase-shifting,and present a compensation algorithm that bases on digital holography four-step phase shifting and interference fringe fit with cosine function.分析了在常用的四步相移中相移误差对相位重构造成的误差,给出了相移误差与相位重构误差的关系式,提出了通过干涉条纹的拟合来计算相移误差的方法,并将该方法应用于数字显微全息术测量细胞相位的实验中,得到了比较理想的细胞三维形貌。
英文短句/例句
1.Study and Application of Error-compensating Algorithm in Phase-shifting Interferometry;相移干涉术中相移误差校正算法及应用研究
2.Correction Algorithm of Phase Shifting Errors in Phase Measuring Profilometry;位相测量轮廓术中相移误差的校正算法
3.Zero-error Low Frequency Three-phase Phase Shift Signal Generator零误差低频程控三相相移信号发生器
4.Analysis and testing for phase-shifting error of a spatial phase-shifting interferometer空间移相干涉仪的移相误差分析和测试
5.Principles and Error Analysis of Phase Shifted Laser Polarimeter移相式激光偏振仪的原理及误差分析
6.Measurement Errors in the 193 nm Phase-shifting Point Diffraction Interferometer193nm移相点衍射干涉仪的测量误差分析
7.fractional error相对误差, 部分误差
8.Analysis and comparison of errors in several phase stepping algorithm with an arbitrary step几种任意步距步进相移算法的误差分析与对比
9.Errors researching for a simultaneous phase shifting interferometer一种同步移相干涉测量系统的误差研究
10.Modeling and analysis of space-rotation error induced by phase-shifter in phase shifting interferometry压电移相器的空间旋转误差建模与实验分析
11.The temperature drift error is one of the major errors of the displacement sensor system.温度漂移误差是位移传感系统的主要误差之一.
12.The eliminating of drift error and the application of phase locked technology and digital filtering improves the precision of instrument.对漂移误差的消除、相技术和数字滤波的应用提高了仪器的精度。
13.The Analysis and Calibration of Systematic Errors of Phase-shifting Interferometer for Flatness Measurement of MEMS Deformable Mirror基于相移干涉的MEMS变形镜平面度测试系统误差分析与校正
14.Study on Dephasing Calibration of Periodical Error and Core-tip Positioning System in Making Precision Rotary Cutting Tools回转类精密刀具制造用芯轴定位系统及周期误差移相修正研究
15.Errors and precision of differential transformer displacement senser;差动变压器位移传感器的误差与精度
16.relative tolerance between forward and backward in indicating value示值进回程相对误差
17.age absolute relative error平均相对误差绝对值
18.By comparing with the actually measured value, the conveyance speed of solid phased particles obtained from simulative calculation of equations has lea errors and a good coincidence.按方程模拟计算得到的固相颗粒运移速度与实测值相比，误差小，吻合较好。
相关短句/例句
Phase-shifting error移相误差
1.Analysis and testing for phase-shifting error of a spatial phase-shifting interferometer空间移相干涉仪的移相误差分析和测试
3)phase-shift error相移器误差
1.On the basis of optical interferometry measurement principle,thephase-shift error,camera error and optical error were analyzed and the optical error was confirmed to be the main error source and the focus axial error of the objective on the reference arm is the main causation that causes the conicoid error.根据光学干涉系统的测量原理,分别对林尼克结构干涉测量系统的相移器误差、摄像机误差和光学系统误差进行了分析,确定光学系统误差是干涉测量系统的主要误差源,其中显微物镜焦点轴向误差是产生系统测量误差曲面的主要原因。
4)phase angle error相位移误差
5)linear phase-shift error线性相移误差
1.Correction algorithm of restriction oflinear phase-shift error in complex spectral OCT system;在CSOCT系统中抑制线性相移误差的校正算法
6)drift error漂移误差
1.Dynamic allan variance analysis for thedrift error of fiber optical gyroscope;光纤陀螺漂移误差动态Allan方差分析
2.An effective and practicable solution of separating coefficient of staticdrift error of the platform was presented.针对某型导弹惯性平台特点,利用平台一次通电随机误差小的特性,提出了如何在临射状态快速准确地分离平台静态漂移误差系数的方案和算法。
3.In order to improve the precision of gyroscope,case rotation is usually applied to automatically compensatedrift error torque relative to the case.为提高陀螺仪的精度,采用壳体翻滚自动补偿与壳体有关的漂移误差力矩。
延伸阅读
射频和微波相移计量射频和微波相移计量RF and microwave phase-shift measurementShePinhe忱ibo xiangyi」iliang射频和微波相移计t(RF’ and而c~pha鱿一s撇~~ni)对射频和微波相移进行准确测量，并保证其量值统一的活动。通常所谓的相移测量是指两个同频率的信号之间的相位差或相位移的测量，亦即网络相位移的测量。计量单位是耐、(o)、(’)、(”)。Ilad二(l8()j二)o;10二印‘;1‘二6以口。常用移相器能提供固定或可变相移量的无耗二端口网络，称为固定或可变移相器。原始的移相器是精密的同轴或波导传输线。常用的射频和微波移相器如下:①伸缩线性移相器。通过改变传输线的机械长度来改变电长度，进而计算出相移量。②移动介质片型移相器。由空波导、薄介质片和传动机构组成，是波导系统中结构最简单和最常用的移相器。③旋转介质片型移相器。由三段波导组成，中间是可旋转的圆波导，两端为固定的方圆过渡波导，其相移量可达721护，分辨率为0.工。，测量不确定度可达0.矛。因其工作频带较宽，分辨率和重复性较好，常用作高频和微波相移传递标准。④反射型移相器。由定向拐合器和滑动短路器组成。人射波由定向藕合器主臂输人，输出信号经短路器反射后由定向祸合器旁臂翰出。当滑动短路器位置改变时，输出信号的相位就发生变化。理想情况下，相移的大小取决于波导波长和短路器的位移。采用精密调配反射计，相移的测量不确定度可达0.1“。⑤电控移相器。主要有二极管电控移相器和铁氧体电控移相器，可步进或连续可调。相移测童方法主要包括:①射频比较法。将被测移相器的相移与标准移相器的相移在同一频率上进行比较求得未知相移。标准移相器通常采用旋转介质片型移相器或反射型移相器。比较系统大多采用并联双通道系统，被侧移相器和标准移相器通道分别称为测量通道和参考通道。两个相移信号在非线性元件中组合。采用不同的非线性组合器件和不同的调制方式，将得到不同的射频比较系统:a.两个通道都不调制而采用连续波;b.两个通道采用同一个调幅信号源进行调制;c.被测移相器通道不进行调制，称为载波通道，但对标准移相器通道进行幅度调制，称为副载波通道。②频率变换法。通过外差变频或取样变频使待测信号转换成低频，而转换后得到的低频信号保留了待测信号的相位信息，这样就把射频或微波的相移测量变成了低频相移的测t。射频比较法需要采用准确度不高的射频或微波标准移相器，且其工作频带窄，而频率变换法克服了射频比较法的这些缺点，准确度大大提高。
