本文提出了一种相位干涉法。用来测量表面声波速度的相对变化。
A phase interference method, for measurement of the relative change of surface acoustic wave velocities, is presented.
值得注意的是在相位干涉法中，只用一块相位模板，就可以调整写入光纤布拉格光栅的波长。
It is noteworthy that the wavelength of the fiber Bragg grating would be tuned via only a phase mask in a phase mask interferometer.
本文应用相位移激光全息干涉法研究板状结构的热应变。
In this paper, the thermal deformation of a plate is measured by Phase shifting laser holography interference.
在光栅谱衍射干涉法的基础上，本文提出用色散效应产生的相位体微分干涉条纹，进行实时假彩色编码的原理。
A new principle is proposed to pseudocolor-code the differential interference in the grating-diffraction interferometry with extended white light illumination by using dispersion effect of a prism.
提出了会聚偏振光干涉法测量波片相位延迟量的新方法。
Put forward a new method of assembling polarization-interference to measure the phase retardation of wave-plate.
在动态测试领域中，数字散斑干涉技术常用到的相位处理方法有时间平均法和空间载波相移法。
In dynamic measurement field, when using digital speckle pattern interferometry, we always deal phase with time-average method and spatial carrier phase-shifting method.
实时全息干涉法可以观察记录整个测试过程中条纹图的动态变化，传统相位提取算法只适合于静态干涉条纹图相位的提取。
Dynamic fringe pattern can be observed throughout the testing by real-time holographic interferometry, while the traditional method is only suitable for static fringe pattern in phase extracting.
为了方便教学，对用共振干涉法和相位比较法测定超声声速的原理进行了剖析、比。
The principles used in measuring sound velocity by means of resonant interference and phase comparison are analyzed and compared, which are convenient for teaching.
利用主动相位补偿法有效地消除了干涉仪系统的相位漂移。
The random shifting of the initiative phase noise is suppressed through the passive phase compensating method.
针对条纹计数法和相位分析法处理自混合干涉信号的不足，提出了一种基于时频分析的自混合干涉信号处理方法。
To overcome the limitation of fringe counting and phase analysis, a new method based on the time-frequency analysis is proposed to process the self-mixing interference signal.
本发明公开了一种基于干涉相位比较法的高精度绝对距离测量系统，属于精密测量技术领域。
The invention discloses a high-precision absolute distance measurement system based on an interferometric phase comparison method, belonging to the technical field of precision measurement.
本发明公开了一种基于干涉相位比较法的高精度绝对距离测量系统，属于精密测量技术领域。
The invention discloses a high-precision absolute distance measurement system based on an interferometric phase comparison method, belonging to the technical field of precision measurement.
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