Graduations manufactured with the SUPRADUR process act optically like three-dimensional phase gratings, but they have a planar structure and are therefore particularly insensitive to contamination.
An adaptive phase shifting interferometry, insensitive to the disturbance of constant term of phase perturbations induced by environmental vibration and air turbulence is discussed.
研究对环境振动和空气扰动所造成的两相干光束间常数项光程变化不敏感的自适应移相干涉系统。
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Phase correlation algorithm as a kind of image matching method has many advantages such as insensitive to noise, unrelated to illumination of target, immune to geometric distortion.