- Category:
- DSP program
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- File Size:
- 345kb
- Update:
- 2012-11-26
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- Uploaded by:
- 陈建军
Description: Based on the polarization phase shift and correlation analysis, a high resolution and convenient interference fringe principle is proposed
The signal processing part of the subline moves forward, which is realized through the analysis and processing of the distribution of the interference fringe intensity distribution, which is through high resolution
The polarization phase shift operation, phase control of the interference phase, the distribution of interference fringes is distributed back to the initial state of the displacement, and corresponding to the phase control quantity
The optical path of the displacement is the lambda /2 fractional part of the displacement. Because the polarization phase is applied to the hardware mechanical movement with the maximum magnification, it can be obtained
Reliable high resolution segmentation. Theoretical analysis and simulation results show that the principle of interference stripe segmentation can easily reach the nanometer resolution
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