Sidelobe Suppression Method with Improved CLEAN Algorithm for Pulse Compression OTDR

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-09-23 DOI:10.1109/LPT.2024.3465501

Yi Huang;Xiaofeng Chen;Wei Shen;Ziyi Wei;Chengyong Hu;Chuanlu Deng;Lisen Wang;Qi Zhang;Wei Chen;Xiaobei Zhang;Lin Chen;Wei Jin;Jianming Tang;Tingyun Wang

引用次数: 0

Abstract

Although pulse compression optical time domain reflectometry (PC-OTDR) exhibits high performance in spatial resolution and dynamic range, it inevitably introduces auto-correlation sidelobes, potentially impacting measurement accuracy. In this letter, an improved CLEAN algorithm is proposed to efficiently suppress sidelobes and enhance the peak-to-sidelobe ratio (PSLR) of signals in PC-OTDR. The proposed method introduces an adaptive step factor instead of the traditional fixed factor to reduce the number of iterations. Compared to the traditional method, the proposed method achieves a 2.87 dB improvement of PSLR from a 10 km sensing fiber. In addition, the computation time cost is significantly reduced, which is 1.92 s less than that of the traditional CLEAN algorithm.

查看原文本刊更多论文

用于脉冲压缩 OTDR 的带改进 CLEAN 算法的侧叶抑制方法

虽然脉冲压缩光学时域反射仪（PC-OTDR）在空间分辨率和动态范围方面表现出很高的性能，但它不可避免地会引入自相关边带，从而对测量精度造成潜在影响。在这封信中，我们提出了一种改进的 CLEAN 算法，以有效抑制 PC-OTDR 中的侧摆，并提高信号的峰值-侧摆比（PSLR）。所提方法引入了自适应步长系数，而不是传统的固定系数，以减少迭代次数。与传统方法相比，所提出的方法可将 10 千米传感光纤的 PSLR 提高 2.87 dB。此外，计算时间成本也大大降低，比传统的 CLEAN 算法减少了 1.92 秒。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.