Asymmetric spectrum demodulation method of fiber Bragg grating sensor based on distributed estimation algorithm

The invention relates to an asymmetric spectrum demodulation method of a fiber Bragg grating sensor based on a distributed estimation algorithm. A fiber Bragg grating (FBG) asymmetric spectrum model is constructed by using the distributed estimation algorithm, a wavelength demodulation work is completed under the condition of spectrum asymmetry generated by the reflection spectrum of FBG due to environmental influence, the asymmetric spectrum demodulation method provided by the invention can not only satisfy the high-precision demodulation requirement of normal spectra, but also can be used for maximally demodulating the asymmetric spectrum, and enhancing the demodulation capability of the asymmetric spectrum by an FBG sensor network. 本发明涉及一种基于分布式估计算法的光纤布拉格光栅传感器非对称光谱解调方法，利用分布式估计算法构建光纤布拉格光栅（FBG）非对称光谱模型，在FBG的反射光谱受环境影响而发生光谱不对称的情况下完成波长解调工作，本发明既能够满足正常光谱的高精度解调要求，又能够对非对称光谱进行最大限度的解调，增强FBG传感网络对非对称光谱的解调能力。