20 December 2013 Positioning approach based on Mach-Zehnder fiber sensors and a DSP processor
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Proceedings Volume 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 90440T (2013) https://doi.org/10.1117/12.2035863
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China
Abstract
A positioning system based on Mach-Zehnder optical fiber interferometer is proposed, which can sense vibration information along the circumference of the fiber sensor and hence be applied to positioning invasions as a safe-guard system in residence communities. A cross-correlation algorithm fulfilled with a DSP processor has been adopted to calculate the time difference of two channels of the Mach-Zehnder optical fiber interferometer. A signal identification algorithm is proposed to decrease the workload of the DSP when no vibration occurs. An experiment with 11.28 kilometers sensing fiber has been carried out, whose results show the Mach-Zehnder positioning system identifies the position of vibration instantaneously and has a 44 meters positioning error within the total sensing distance.
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Xiong Wan, Xiong Wan, Tingting Du, Tingting Du, Zhimin Zhang, Zhimin Zhang, Huaming Zhang, Huaming Zhang, Peng Wang, Peng Wang, "Positioning approach based on Mach-Zehnder fiber sensors and a DSP processor ", Proc. SPIE 9044, 2013 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 90440T (20 December 2013); doi: 10.1117/12.2035863; https://doi.org/10.1117/12.2035863
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