基于K-L变换的光纤光栅解调算法研究

摘要

为了提高光纤光栅传感系统解调精度,针对FBG含噪信号,本文将K-L变换用于FBG解调,对整个解调过程做了理论分析,并且通过Matlab进行了仿真验证.实验结果表明,本文采用的方法解调精度达到了1pm,满足工程需要,具有应用价值.%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.