Analytic Modeling of Distributed Acoustic Sensing Signals: Matlab Codes for DAS Wavelets and Attenuation

<p>The site archives a number of codes written in Matlab to calculate the DAS strain and strain rate responses accounting for a straight, perfectly coupled fiber.  The codes consider separately P and SV wave responses as functions of the material velocity, the DAS gage length, the input wavelet and the plane wave angle of incidence.  The effects of material attenuation on the DAS response over a single gage is included only for the case of a P-wave propagating parallel to the fiber.   The complete set of codes as well as associated convenient scripts to run them is contained in the zipped file DAS_Matlab.zip.  The document READ ME.docx contains a detailed listing of the included programs as well as information on operating them.</p>

<p>These programs are associated with the manuscript 'Tutorial: Distributed Acoustic Sensing (DAS) Wavelets: Effects of Phase, Attenuation, and Geometry' submitted to Geophysics,  September 2023.</p>

<p>Additional numerical codes associated with this paper may be found in the related repository PURR repository 'geophone to DAS converter' ( <strong>Zhang, O.; Schmitt, </strong>D. R. (2023). <em>A Python tool converting geophone to DAS response </em>[software]. Purdue University Research Repository. doi:10.4231/ZD3Q-RV18, 2023)</p>

本存档站点归档了一系列基于MATLAB编写的代码，用于计算平直且完美耦合光纤下的分布式声学传感（Distributed Acoustic Sensing, DAS）应变与应变率响应。这些代码可分别以材料波速、DAS测量栅长、输入子波及平面波入射角为变量，计算P波与SV波的响应。仅当P波沿光纤平行传播时，才会纳入单测量栅长下材料衰减对DAS响应的影响。完整代码集及配套的便捷运行脚本均收录于压缩包DAS_Matlab.zip中。文档READ ME.docx详细罗列了所包含的程序，并提供了程序运行的相关说明。

本系列程序关联2023年9月提交至学术期刊《Geophysics》的手稿《分布式声学传感（DAS）子波教程：相位、衰减与几何效应》。

本论文关联的其他数值代码可在相关的PURR仓库（全称Purdue University Research Repository，普渡大学研究仓库）的「geophone to DAS converter」（检波器转DAS响应工具）中获取。相关引用信息为：Zhang, O.; Schmitt, D. R. (2023). 《Python实现检波器转DAS响应工具》[软件]. 普渡大学研究仓库. DOI:10.4231/ZD3Q-RV18, 2023。

搜集汇总

背景与挑战

背景概述

该数据集包含用于计算分布式声学传感（DAS）信号的Matlab代码，主要分析应变和应变率响应，特别关注P波和SV波的影响以及材料衰减效应。这些代码与一篇关于DAS波形的教程论文相关，适用于地球物理和地震行为研究。