scholarly journals An integral approach to phase shifting interferometry using a super-resolution frequency estimation method

2004 ◽  
Vol 12 (20) ◽  
pp. 4681 ◽  
Author(s):  
Abhijit Patil ◽  
Rajesh Langoju ◽  
Pramod Rastogi
Keyword(s):  
Frequency Estimation ◽  
Estimation Method ◽  
Super Resolution ◽  
Phase Shifting ◽  
Integral Approach ◽  
Phase Shifting Interferometry

Harmonic Frequency Estimation Based on Modified-MUSIC Algorithm in Power System

2015 ◽  
Vol 9 (1) ◽  
pp. 38-42 ◽  
Author(s):  
Xiangwen Sun ◽  
Ligong Sun
Keyword(s):  
Frequency Estimation ◽  
Estimation Method ◽  
Super Resolution ◽  
Small Data ◽  
Music Algorithm ◽  
Harmonic Frequency ◽  
Multiple Signal Classification ◽  
Analysis Techniques ◽  
Resolution Algorithm ◽  
Data Length

This paper presents a new harmonics frequency estimation method. Unlike the conventional harmonic frequency estimation method (fast Fourier transform), the new algorithm is based on spectrum analysis techniques often used to estimate the direction of angle; the most popular is the multiple signal classification (MUSIC) algorithm. The drawbacks of MUSIC algorithm are concluded. Improved-MUSIC approximation algorithm is introduced and compared with FFT based on algorithm for harmonic frequency estimation. Theoretical analysis and simulations show this algorithm is a super- resolution algorithm with small data length.

Statistical estimation method for phase shift in generalized two-step phase-shifting interferometry

2016 ◽  
Vol 64 (5) ◽  
pp. 484-490 ◽  
Author(s):  
Yuanyuan Xu ◽  
Yawei Wang ◽  
Ying Ji ◽  
Weifeng Jin ◽  
Hao Han ◽  
...  
Keyword(s):  
Phase Shift ◽  
Statistical Estimation ◽  
Estimation Method ◽  
Phase Shifting ◽  
Phase Shifting Interferometry
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