LIU Yun, XU Zi-qi, WANG Bo, et al. Application of difference method in FBG temperature measurement system[J]. 2016, 35(11): 151-153. DOI: 10.13873/J.1000-9787(2016)11-0151-03.
In order to improve stability and anti-jamming capability of system
differential method is applied to FBG temperature measurement system. The corresponding theoretical calculation is given
list steps of differential compensation algorithm. Experimental test temperature range 25. 0
75. 0 ℃
the results show that the relationship between changes in echo signal corresponding to temperature difference between center wavelength of the fundamental accord that each 1. 0 ℃ get 0. 04 nm shift. System error of differential temperature measurement system type is less than 0. 5 %
precision is about 4 times higher than single FBG. Thus
temperature measurement system based on differential has better stability and anti-jamming capability.
A reduced-complexity image coding scheme using decision-directed wavelet-based contourlet transform [J] . Chao-Hsiung Hung,Hsueh-Ming Hang. Journal of Visual Communication and Image Representation . 2012 (7)