title: Advanced signal processing techniques for beamforming in distributed acoustic sensing systems based on optical time-domain reflectometry
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ð¤Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð´Ð¸Ð°Ð³ÑÐ°Ð¼Ð¼ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½ÑÑ Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ ÑÐµÑÐ»ÐµÐºÑÐ¾Ð¼ÐµÑÑÐ¸Ð¸ Ð¿ÑÐ¸ Ð¿Ð¾Ð¼Ð¾ÑÐ¸ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð²
Creators: name: Ð¦ÑÐ¹ Ð§ÑÐ½ÑÐ¿ÑÐ½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ°ÑÑÐ¸ÐºÐ¸ Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ
Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ñ
OTDR
DAS
beamforming

description: The subject of the graduate qualification work is Advanced Signal Processing Techniques for Beamforming in Distributed Acoustic Sensing Systems Based on Optical Time-Domain Reflectometry. In this paper, we review the current state of research on seismic measurements based on OTDR systems and DAS sensors, and summarize the basic technologies of OTDR and DAS systems for testing seismic waves, talk about their main principles and specific applications, and then we share the current systems used for actual measurements, as well as the findings and technical bottlenecks of the current mainstream research. Afterwards, we use a self-designed Matlab signal simulation system to generate the simulation of backward Rayleigh scattering, and its human-computer interface to run to change nearly ten parameters to obtain the target simulation signal, and we propose a relatively simple and use of the beam forming technique to process the signal, we firstly process the high-quality simulation of backward Rayleigh scattering signals generated by Matlab, and We prove the feasibility of the modified beam forming technique by comparing the waveform graphs before and after, at the same time, we apply the technique to the actual collected seismic wave backward Riley scattering signals and theoretically validate it by spectrograms, the results prove the feasibility of the method in most cases, and analyze some display factors that may lead to the failure of the method.
description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ â Â«Ð£ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð´Ð»Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»ÑÑÐ° Ð² ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½ÑÑ Ð°ÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ Ð·Ð¾Ð½Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ ÑÐµÑÐ»ÐµÐºÑÐ¾Ð¼ÐµÑÑÐ¸Ð¸Â». Ð ÑÑÐ¾Ð¹ ÑÑÐ°ÑÑÐµ Ð¼Ñ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ ÑÐµÐºÑÑÐµÐµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ð¹ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸ÑÑÐµÐ¼ OTDR Ð¸ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² DAS, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¾Ð±Ð¾Ð±ÑÐ°ÐµÐ¼ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ ÑÐ¸ÑÑÐµÐ¼ OTDR Ð¸ DAS Ð´Ð»Ñ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð²Ð¾Ð»Ð½, ÑÐ°ÑÑÐºÐ°Ð·ÑÐ²Ð°ÐµÐ¼ Ð¾Ð± Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð°Ñ Ð¸ ÐºÐ¾Ð½ÐºÑÐµÑÐ½ÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸ÑÑ, Ð° Ð·Ð°ÑÐµÐ¼ ÑÐ°ÑÑÐºÐ°Ð·ÑÐ²Ð°ÐµÐ¼ Ð¾ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ Ð´Ð»Ñ ÑÐµÐ°Ð»ÑÐ½ÑÑ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ð¹, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¾ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ñ Ð¸ ââÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ·ÐºÐ¸Ñ Ð¼ÐµÑÑÐ°Ñ ÑÐµÐºÑÑÐ¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹. ÐÐ°ÑÐµÐ¼ Ð¼Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÑ Ð½Ð°Ð¼Ð¸ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Matlab Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð ÑÐ»ÐµÑ Ð¸ ÐµÐµ Ð¸Ð½ÑÐµÑÑÐµÐ¹Ñ ÑÐµÐ»Ð¾Ð²ÐµÐº-Ð¼Ð°ÑÐ¸Ð½Ð° Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¿Ð¾ÑÑÐ¸ Ð´ÐµÑÑÑÐ¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ñ ÑÐµÐ»ÑÑ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ ÑÐµÐ»ÐµÐ²Ð¾Ð³Ð¾ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐµÐ´Ð»Ð°Ð³Ð°ÐµÐ¼ Ð¾ÑÐ½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ Ð¿ÑÐ¾ÑÑÐ¾Ð¹ Ð¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÐ¸Ð¹ÑÑ Ð¼ÐµÑÐ¾Ð´ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»ÑÑÐ° Ð´Ð»Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð°. Ð¡Ð½Ð°ÑÐ°Ð»Ð° Ð¼Ñ Ð¾Ð±ÑÐ°Ð±Ð°ÑÑÐ²Ð°ÐµÐ¼ Ð²ÑÑÐ¾ÐºÐ¾ÐºÐ°ÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð ÑÐ»ÐµÑ, ÑÐ¾Ð·Ð´Ð°Ð½Ð½Ð¾Ðµ Matlab, Ð¸ Ð´Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÐµÐ¼ Ð¾ÑÑÑÐµÑÑÐ²Ð¸Ð¼Ð¾ÑÑÑ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¼ÐµÑÐ¾Ð´Ð° ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»ÑÑÐ°, ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°Ñ Ð³ÑÐ°ÑÐ¸ÐºÐ¸ ÑÐ¾ÑÐ¼Ñ Ð²Ð¾Ð»Ð½Ñ Ð´Ð¾ Ð¸ Ð¿Ð¾ÑÐ»Ðµ, Ð² ÑÐ¾ Ð¶Ðµ Ð²ÑÐµÐ¼Ñ Ð¼Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÐµÐ¼ Ð¼ÐµÑÐ¾Ð´ Ðº ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸ ÑÐ¾Ð±ÑÐ°Ð½Ð½ÑÐ¼ ÑÐ¸Ð³Ð½Ð°Ð»Ð°Ð¼ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð Ð°Ð¹Ð»Ð¸ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð²Ð¾Ð»Ð½Ñ Ð¸ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸ Ð¿ÑÐ¾Ð²ÐµÑÑÐµÐ¼ ÐµÐ³Ð¾ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐ¿ÐµÐºÑÑÐ¾Ð³ÑÐ°Ð¼Ð¼. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¿Ð¾Ð´ÑÐ²ÐµÑÐ¶Ð´Ð°ÑÑ Ð¾ÑÑÑÐµÑÑÐ²Ð¸Ð¼Ð¾ÑÑÑ Ð¼ÐµÑÐ¾Ð´Ð° Ð² Ð±Ð¾Ð»ÑÑÐ¸Ð½ÑÑÐ²Ðµ ÑÐ»ÑÑÐ°ÐµÐ² Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÑÑ Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐ°ÐºÑÐ¾ÑÑ Ð¾ÑÐ¾Ð±ÑÐ°Ð¶ÐµÐ½Ð¸Ñ, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¼Ð¾Ð³ÑÑ Ð¿ÑÐ¸Ð²ÐµÑÑÐ¸ Ðº ÑÐ±Ð¾Ñ Ð¼ÐµÑÐ¾Ð´Ð°.