Phase unwrapping program, phase unwrapping processor and phase unwrapping method

摘要

Problem to be solved: to provide a phase unwrapping processing program capable of correcting the phase change of 2. PI. Or more.Each sampling position of optical fiberAcquisition of data sequence of phase difference caused by expansion and contraction of optical fiber andFor the first data stream acquired for the first sampling position where the phase wrap occursA first processing for obtaining a second data string by performing phase unwrappingA third data string is obtained for a second sampling position where the data sequence having a predetermined correlation between the first sampling position and the first data string has a lower sensitivity to vibration than the first sampling positionData of the second data string is corrected so that the correlation coefficient between the second data string and the third data string becomes largerOrA second processing for correcting the data of the second data string to reduce the error between the model and the second data string created from the third data string and the frequency response function and.Diagram