KANG Shou-qiang, YANG Guang-xue. Subsection FFT algorithm applied to signal demodulating of FBG sensors[J]. 2006, (8): 77-78+81. DOI: 10.13873/j.1000-97872006.08.027.
分段FFT算法在FBG传感器信号解调中的应用
摘要
针对光纤B ragg光栅(FBG)传感器信号解调实时性较差
且当2个信号波形发生部分重叠时波长不能被检测的问题
提出了利用F-P可调谐滤波器
采用分段FFT的快速相关算法。此算法具有运算量小、效率高的优点
达到信号实时处理的目的。通过MATLAB大量仿真实验
证明可以有效解决波形部分重叠问题。
Abstract
Aiming at the poor real-time performance of signal demodulation of fiber Bragg grating(FBG) sensors
and the wavelength can’t be detected when two signal waveforms overlap
subsection FFT convolution Computation by using F-P tunable filter is presented.It can realize signal real-time processing with a less calculation and high-efficiency.Plentiful MATLAB simulation tests validate the problem of the signal overlapping can be resolved well.