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Long-range BOTDA denoising with multi-threshold 2D discrete wavelet

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Abstract

Multi-threshold 2D discrete wavelet based on BayesShrink method is utilized to enhance the SNR of BOTDA. Then a 154.42 BOTDA is experimentally demonstrated with 40ns pump pulses, and the measurement uncertainty is reduced from ±1.52MHz down to ±1.03MHz.

© 2016 Optical Society of America

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