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Phase Estimation in Optical Interferometry
book

Phase Estimation in Optical Interferometry

by Pramod Rastogi, Erwin Hack
November 2014
Intermediate to advanced content levelIntermediate to advanced
366 pages
11h 5m
English
CRC Press
Content preview from Phase Estimation in Optical Interferometry
Windowed Fourier Transforms 51
and satisfactory for the whole fringe signal. erefore, errors would be
introduced to the phase demodulation by the FT method, as described in
Section 2.2.
2.5.2 Numerical Analysis by WFT with an Invariable Window Size
For comparison, the WFT method is employed for analysis with dier-
ent scale factors. Figure2.16 shows the unwrapped demodulated phase
with WFT employing the scale factors a = 30 and a = 8. Figure2.17 shows
the respective errors. When employing an inappropriate scale factor with
0
100 200 300 400
500
−10
−5
0
5
10
Position/Pixel
Phase/Rad
True phase
By narrow filter
By large filter
FIGURE 2.13 e unwr ...
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Publisher Resources

ISBN: 9781466598317