基于单纯形编码和短时傅里叶变换处理的高速远程BOTDR

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-08-08 DOI:10.1109/LPT.2025.3596979

Yang Zhang;Jiageng Chen;Hanzhao Li;Xuhui Yu;Zuyuan He

{"title":"基于单纯形编码和短时傅里叶变换处理的高速远程BOTDR","authors":"Yang Zhang;Jiageng Chen;Hanzhao Li;Xuhui Yu;Zuyuan He","doi":"10.1109/LPT.2025.3596979","DOIUrl":null,"url":null,"abstract":"Conventional frequency-scanned Brillouin optical time-domain reflectometry (BOTDR) reconstructs the Brillouin gain spectrum via step-by-step narrowband filtering, which prolongs the measurement duration. In contrast, digital signal processing (DSP)-based BOTDR significantly accelerates the measurement process by employing broad-spectrum frequency analysis. However, to the best of our knowledge, the sensing range of reported DSP-based BOTDR systems remains limited, primarily due to signal-to-noise ratio degradation resulting from noise accumulation inherent to broadband detection. In this work, we propose a coded coherent-detection BOTDR system followed by short-time Fourier transform signal processing, enabling high-speed long-range sensing. In experimental demonstration, an 80.3 km BOTDR with 127-bit simplex-coded sequences is realized, achieving a frequency resolution of 1.34 MHz and a spatial resolution of 4.57 m, within a 60-s total measurement time.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 22","pages":"1285-1288"},"PeriodicalIF":2.5000,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-Speed Long-Range BOTDR by Simplex Coding and Short-Time Fourier Transform Processing\",\"authors\":\"Yang Zhang;Jiageng Chen;Hanzhao Li;Xuhui Yu;Zuyuan He\",\"doi\":\"10.1109/LPT.2025.3596979\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Conventional frequency-scanned Brillouin optical time-domain reflectometry (BOTDR) reconstructs the Brillouin gain spectrum via step-by-step narrowband filtering, which prolongs the measurement duration. In contrast, digital signal processing (DSP)-based BOTDR significantly accelerates the measurement process by employing broad-spectrum frequency analysis. However, to the best of our knowledge, the sensing range of reported DSP-based BOTDR systems remains limited, primarily due to signal-to-noise ratio degradation resulting from noise accumulation inherent to broadband detection. In this work, we propose a coded coherent-detection BOTDR system followed by short-time Fourier transform signal processing, enabling high-speed long-range sensing. In experimental demonstration, an 80.3 km BOTDR with 127-bit simplex-coded sequences is realized, achieving a frequency resolution of 1.34 MHz and a spatial resolution of 4.57 m, within a 60-s total measurement time.\",\"PeriodicalId\":13065,\"journal\":{\"name\":\"IEEE Photonics Technology Letters\",\"volume\":\"37 22\",\"pages\":\"1285-1288\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-08-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Photonics Technology Letters\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/11121399/\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/11121399/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

摘要

传统的频率扫描布里渊光时域反射法（BOTDR）通过分步窄带滤波重建布里渊增益谱，延长了测量时间。相比之下，基于数字信号处理（DSP）的BOTDR通过采用广谱频率分析显著加快了测量过程。然而，据我们所知，基于dsp的BOTDR系统的传感范围仍然有限，主要是由于宽带检测固有的噪声积累导致的信噪比下降。在这项工作中，我们提出了一种编码相干检测BOTDR系统，随后进行短时傅里叶变换信号处理，实现高速远程传感。在实验演示中，实现了127位简单编码序列的80.3 km BOTDR，在60 s的总测量时间内实现了1.34 MHz的频率分辨率和4.57 m的空间分辨率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

High-Speed Long-Range BOTDR by Simplex Coding and Short-Time Fourier Transform Processing

Conventional frequency-scanned Brillouin optical time-domain reflectometry (BOTDR) reconstructs the Brillouin gain spectrum via step-by-step narrowband filtering, which prolongs the measurement duration. In contrast, digital signal processing (DSP)-based BOTDR significantly accelerates the measurement process by employing broad-spectrum frequency analysis. However, to the best of our knowledge, the sensing range of reported DSP-based BOTDR systems remains limited, primarily due to signal-to-noise ratio degradation resulting from noise accumulation inherent to broadband detection. In this work, we propose a coded coherent-detection BOTDR system followed by short-time Fourier transform signal processing, enabling high-speed long-range sensing. In experimental demonstration, an 80.3 km BOTDR with 127-bit simplex-coded sequences is realized, achieving a frequency resolution of 1.34 MHz and a spatial resolution of 4.57 m, within a 60-s total measurement time.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.