Analytical CFT of truncated signals with polynomial fitting produces consistent amplitude and phase for thermography cooling curves without the sampling-rate artifacts seen in FFT-based PPT, provided the curve start is captured.
Ibarra Castanedo, Quantitative subsurface defect evaluation by pulsed phase thermography: depth retrieval with the phase (2005)
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Continuous Fourier Transform: A practical approach for truncated signals and suggestions for improvements in thermography
Analytical CFT of truncated signals with polynomial fitting produces consistent amplitude and phase for thermography cooling curves without the sampling-rate artifacts seen in FFT-based PPT, provided the curve start is captured.