Difference between revisions of "Numerical Analysis of Interference Patterns"
Jump to navigation
Jump to search
| Line 11: | Line 11: | ||
== Phase-Locked Loop Algorithm == | == Phase-Locked Loop Algorithm == | ||
| + | * computer simulated oscillator (VCO) needed | ||
| + | * phase error b/w the fringe pattern and the VCO vanishes | ||
== Artificial Neural Network Method == | == Artificial Neural Network Method == | ||
Revision as of 15:06, 19 September 2007
This page is currently a work in progress.
Phase Shifting Technique
- requires three phase shifted fringe patterns
- the phase shift must be known
- carefully controlled conditions must be maintained
Fourier Analysis Method
- requires carrier frequency, narrow frequency, low noise and open fringes
- estimates the phase wrapped (via arctan)
Phase-Locked Loop Algorithm
- computer simulated oscillator (VCO) needed
- phase error b/w the fringe pattern and the VCO vanishes