特征点压缩算法在分布式光纤桩基检测中的应用

发布时间：2018-04-05 08:14

本文选题：桩基　切入点：分布式光纤检测　出处：《岩土力学》2017年03期

【摘要】：布里渊散射光时域反射测量技术(BOTDR/A)是一种重要的分布式光纤感测技术。采用BOTDR/A技术进行分布式光纤桩基检测时,海量的检测数据需要平滑去噪。介绍了分布式光纤桩基检测中最常用的感测光纤埋设工艺、海量检测数据的特点、平滑去噪在检测数据处理分析方面的作用,并据此提出了特征点压缩算法(一种新的平滑去噪方法)的概念和实现流程;结合工程实测数据,分析了该法的平滑去噪效果,验证了该法的实际应用情况。研究结果表明:该方法用于桩基检测数据处理是十分有效的,与常规算法对比,该方法简单高效,能够在不丢失检测数据特征趋势的同时对数据进行较好的平滑去噪,实际应用达到了满意的效果,其结果可在分布式光纤桩基检测的数据处理中推广应用。
[Abstract]:Brillouin scattering optical time domain reflectance measurement (BOTDR / A) is an important distributed fiber sensing technique.When using BOTDR/A technology to detect distributed optical fiber pile foundation, mass detection data need smooth denoising.This paper introduces the most commonly used sensing fiber embedding technology in the distributed fiber pile foundation detection, the characteristics of massive detection data, and the function of smooth denoising in the processing and analysis of the detection data.The concept and implementation flow of feature point compression algorithm (a new smoothing denoising method) are put forward, and the smoothing denoising effect of the method is analyzed, and the practical application of the method is verified.The research results show that this method is very effective in data processing of pile foundation detection. Compared with the conventional algorithm, this method is simple and efficient, and can smooth the data without losing the trend of detection data.The practical application has achieved satisfactory results, and the results can be popularized and applied in the data processing of distributed optical fiber pile foundation detection.
【作者单位】：南京大学地球科学与工程学院;
【基金】：国家自然科学基金重点项目(No.41230636) 国家重大科研仪器研制项目(No.41427801) 国土资源部公益性行业科研专项(No.201511055-2)~~
【分类号】：TU473.16

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