期刊论文

Research onoptimizing accuracy and real-time performance of distributed optical fiber temperature sensor system

中文

激光杂志

0253-2743

2023

44

1

62-67

10.14016/j.cnki.jgzz.2023.01.062

国家重点研发计划(No.2020YFE0202002)；

本校为第一机构

为了提高基于拉曼散射光的分布式光纤测温(Roman-Based Distributed Optical Fiber Temperature Sensor,RDTS)系统的测量精度,采用双端环形结构,有效避免了Stokes...展开更多 为了提高基于拉曼散射光的分布式光纤测温(Roman-Based Distributed Optical Fiber Temperature Sensor,RDTS)系统的测量精度,采用双端环形结构,有效避免了Stokes光与Anti-Stokes光的损耗系数差异导致的测温精度下降。在此基础上采用累加平均与小波包阈值去噪相结合的方法降低系统的随机噪声,在提高系统信噪比的同时,提高了系统的响应速度。实验表明,测温光纤为10 km时,该方法将系统的信噪比由21.2871 dB提升至35.7864 dB...

In order to improve the measurement accuracy of Raman-based distributed optical fiber temperature sensor(RDTS)system,a double-end injection ring structure is used to avoid the loss coefficient difference between Stokes light and Anti-Stokes light.On this basis,the metho...MORE In order to improve the measurement accuracy of Raman-based distributed optical fiber temperature sensor(RDTS)system,a double-end injection ring structure is used to avoid the loss coefficient difference between Stokes light and Anti-Stokes light.On this basis,the method of combining cumulative average and wavelet packet...