TY  - JOUR
AU  - WANG, Zongliang
AU  - CHANG, Jun
AU  - ZHANG, Sasa
AU  - LUO, Sha
AU  - JIA, Cuanwu
AU  - SUN, Boning
AU  - JIANG, Shuo
AU  - LIU, Yongning
AU  - LIU, Xiaohui
AU  - LV, Guangping
AU  - LIU, Zhi
PY  - 2014
TI  - Application of Wavelet Transform Modulus Maxima in Raman Distributed Temperature Sensors
JO  - Photonic Sensors
SN  - 1674-9251
SP  - 142
EP  - 146
VL  - 4
IS  - 2
AB  - We proposed and demonstrated a wavelet transform modulus maxima (WTMM) de-noising method to decrease the temperature error. In this scheme, the composition scale was determined simply by the WTMM amplitude variation with the growth of the decomposition scale at 30 °C, and the signal WTMM was obtained by the wavelet decomposition modulus on every decomposition scale based on the modulus propagating difference between the signal and noise. Then, we reconstructed the signal using the signal WTMM. Experimental results show that the proposed method is effective for de-noising, allowing for a temperature error decrease of about 1 °C at 40 °C and 50 °C comparing to the original data.
UR  - https://doi.org/10.1007/s13320-014-0179-y
DO  - 10.1007/s13320-014-0179-y