In order to improve the demodulation accuracy of fiber Bragg grating sensing system,Karhunen-Loeve transform is applied to the FBG demodulation for FBG noisy signal.The whole demodulation process is analyzed theoretically and simulated by Matlab.The experimental results show that the demodulation accuracy of this method reaches 1pm,which meets the engineering requirements and has application value.
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江虹,李进,张善慧,王新远,王奉宇.基于K-L变换的光纤光栅解调算法研究[J].激光与红外,2017,47(8):1029~1032 JIANG Hong, LI Jin, ZHANG Shan-hui, WANG Xin-yuan, WANG Feng-yu. Research on fiber grating demodulation algorithm based on K-L transform[J]. LASER & INFRARED,2017,47(8):1029~1032