The difficulty of phase unwrapping cannot be avoided in optical measurement based on fringe analysis.
位相展开问题是所有基于条纹分析的光学测量技术都难以避免的问题。
It is demonstrated that the phase discrepancy caused by optical dispersion of this new kind sensor head is very small and its influence on measurement can be ignored, showing practical significance.
进一步论证了光的色散对于这种传感头造成的位相差是非常小的，对测量影响可以忽略，因而该方案具有实用价值。
The optical-electrical measurement is an effective and feasible way to measure solid particle concentration and velocity in gas-solid two phase flow.
应用光一电检测方法测量气一固两相流中固体微粒浓度、速度，是一种十分有效和可行的方法。
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