Xdas Toy DAS Datasets

Overview This data repository contains some toy DAS (Distributed Acoustic Sensing) datasets to play with the Xdas library. Source The datasets were obtained during the POST and the ABYSS experiments by interrogating several telecom cables from the GTD company in central Chile. Several OptoDAS interogator from the ASN (Alcatel Submaring Network) company were used.This project is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 101041092 – ABYSS) Details This data repository contains three datasets located in three folders:- ntp_sync: an ~2 min example of dataset that was laking GPS syncronization and that present some timing issues.- gps_multiacq: a ~6 min example where the acquisition parameters where changed two times.- gps_multicable: a ~10 min example of simultanous recordings on three cables. An regional earthquake is clearly visible in that dataset.概览 本数据集仓库包含若干用于测试Xdas库的演示用分布式声波传感（Distributed Acoustic Sensing, DAS）数据集。 来源 本数据集采集自智利中部地区GTD公司旗下多条电信光缆，获取于POST与ABYSS实验期间。本次实验使用了ASN（Alcatel Submarine Network，阿尔卡特海底网络公司）生产的多款OptoDAS interrogator（解调仪）。本项目获得欧洲研究理事会（European Research Council, ERC）资助，依托欧盟“地平线2020”研究与创新计划立项（项目协议编号：101041092 – ABYSS）。 细节说明 本数据集仓库共包含3个数据集，分别存放于3个对应文件夹： - ntp_sync：时长约2分钟的示例数据集，因未配置GPS同步而存在时序异常问题； - gps_multiacq：时长约6分钟的示例数据集，采集参数曾被修改两次； - gps_multicable：时长约10分钟的示例数据集，为三条光缆的同步录制结果，其中可清晰观测到区域地震信号。