Combining with tangent subdividing method, this method can correct the counting error, recognize the direction and subdivide the fraction of fringes displacement.
采用正切细分法，对不足一个信号周期的条纹位移，实现了正确的辨向和高倍数细分。
Combining with tangent subdividing method, this method can correct the counting error, recognize the direction and subdivide the fraction of fringes displacement.
采用正切细分法，对不足一个信号周期的条纹位移，实现了正确的辨向和高倍数细分。
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