基于高斯函数的光谱叠加信号处理仿真研究

Simulation on Superposition Signals Processing of Optic Spectrum Based on Gauss Function

摘要:

针对重金属离子敏光纤传感器阵列光谱信号叠加引起的多种离子浓度测量误差较大的问题, 采用高斯函数对重金属离子敏光纤传感器阵列信号进行建模。在利用Matlab对光纤传感器阵列光谱叠加信号进行分离和相对误差分析的基础上提出了一种误差修正的方法。从仿真结果可知, 这种算法可以减小由于重金属离子敏感膜的离子间干扰引起的光谱重叠误差, 为实际光纤传感器阵列的制作和光谱信号处理提供了理论依据。

Abstract:

In order to solve the problem of too much deviation in the measurement of multi-ion concentration caused by superposition of optical spectrum in optical fiber sensor array which is sensitive to heavy metal ions, Gaussian function is utilized to model the signals of the optical fiber sensor array. Based on the division of superposition signals of optical spectrum and the analysis of relative error in optical fiber sensor array simulated by Matlab software, a method of error correction is proposed. The simulation results show that the superposition error of optical spectrum caused by interference between ions in films sensitive to heavy metal ions can be reduced highly by the arithmetic method.