基于多域多重复合的 Φ-OTDR 系统的色抑制方法.
Shuai Tong1,2, Shaoxiong Tang1,2, Yifan Lu1,2
1College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
一种新的多域复杂化 (MDM) 方法有效地抑制了相位敏感光时域反射计 (Φ-OTDR) 系统中的色噪声. 这种技术实现了无色测量,提高了 Φ-OTDR 实际应用的可靠性.
科学领域:
- 光电学是指光电子产品.
- 光纤传感传感器是指光纤传感器.
- 信号处理 信号处理
背景情况:
- 阶段敏感光学时域反射计 (Φ-OTDR) 被广泛使用,但受到色噪声的影响,导致错误报警和限制应用.
- 现有的单域多重复合方法,如空间域多重复合 (SDM),极化域多重复合 (PDM) 和频域多重复合 (FDM),在全面的色噪声抑制方面存在局限性.
研究的目的:
- 为基于多域多重复合 (MDM) 的 Φ-OTDR 系统提出并实验验证一种新的色抑制方法.
- 分析现有的单域复杂化技术的原则和局限性.
- 为了确定MDM的最佳参数组合,以实现有效的色噪声抑制.
主要方法:
- 分析单域复杂化 (SDM,PDM,FDM) 的原则和局限性.
- 详细解释多域复杂化 (MDM) 原则.
- 使用各种参数组合 (FDM频率,SDM间隔,PDM) 评估MDM的实验设置.
主要成果:
- 单域复杂化方法本身不足以实现全面的色噪声抑制.
- 优化了MDM的参数组合,包括FDM频率,SDM间隔和PDM,有效地抑制色噪声.
- MDM提供了性能和硬件复杂性之间的最佳平衡,实现了无色测量.
结论:
- 与单域方法相比,多域多重复合 (MDM) 是在 Φ-OTDR 系统中对抗衰减噪声的优越策略.
- 优化的MDM提供了一个强大而实用的解决方案,可以实现可靠的,无色的测量.
- 这项工作为 Φ-OTDR 技术的广泛工程应用提供了有前途的技术进步.
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