Miao Sun, Yuquan Tang, Shuang Yang, Xiaohu Zhao, Zhirong Zhang, Feiyu Zhuang. Noise Reduction Method to Improve Temperature Measurement Accuracy of Distributed Temperature Sensor[J]. Laser & Optoelectronics Progress, 2022, 59(19): 1906003
- Laser & Optoelectronics Progress
- Vol. 59, Issue 19, 1906003 (2022)
Fig. 1. Schematic diagram of the distributed temperature sensing system
Fig. 2. Intensity of Raman scattered light. (a) Light intensity distribution on the sensing fiber; (b) normalized scattered light intensity at different temperatures
Fig. 3. Measurement results of the DTS system with a ring fiber structure. (a) Temperature measurement result; (b) temperature measurement error
Fig. 4. Intensity of the ground noise
Fig. 5. Measurement results for different temperatures before and after the noise floor correction. (a) Measurement result of temperature; (b) temperature measurement error
Fig. 6. Rayleigh noise calculated under different temperature
Fig. 7. Measurement results and temperature measurement errors before and after Rayleigh noise correction. (a) Measurement value of temperature; (b) temperature measurement error
Fig. 8. Temperature measurement error of DTS system
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