@inproceedings{478b5d0b3cc543fcba047250a46d813c,
title = "Positioning method for Dual Mach-Zehnder interferometric submarine cable security system",
abstract = "Dual Mach-Zehnder interferometric fiber sensor is one of the appropriate solutions to the application of submarine cable security. While the seabed environment makes the vibration output a narrow bandwidth lowpass interference signal and these property makes the correlation based event positioning algorithm hard to design. A preprocessing method intends to increase signal power spectral range before correlation is proposed. A bandpass filter is imposed to enhance the effect of high frequency components, despite the filtered signal is different from the original one. A post-integration SNR threshold is calculated to determine the proper center frequency and bandwidth of the filter. Experiment results show a good accordance with theoretical prediction.",
keywords = "Cross correlation, Dual Mach-Zehnder interferometer, Time delay estimation",
author = "Shangran Xie and Min Zhang and Shurong Lai and Yanbiao Liao",
year = "2010",
doi = "10.1117/12.850115",
language = "English",
isbn = "9780819481412",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Fiber Optic Sensors and Applications VII",
note = "Fiber Optic Sensors and Applications VII ; Conference date: 07-04-2010 Through 08-04-2010",
}