Description: Are some figures related to law 1.FFT law and the number of papers related to phase measurement in comparison. Pdf2. Using digital correlation method phase. Pdf3. Algorithm based on FFT spectral analysis phase of high-precision measurement method. Pdf4. Based on Hilbert transform phase measurement method and the number of relevant comparison test phase. pdf5. Based on Virtual Instrument Technology and inter-related principles of the phase measurement. pdf6. digitized phase measurement algorithm. pdf7. phase of digital measurement. pdf8 . virtual instrument measurement of periodic signal design phase of the simulation. pdf