45公里ROTDR与0.5米/0.11°C通过复杂域方形波宽跳动脉冲压缩
Bowen Fan1,2, Jian Li3,4,5, Xinyue Zhang1,2
1College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, China.
Light, science & applications
|March 17, 2026
概括
这项研究引入了一种新的复杂域脉冲压缩技术,用于拉曼光学时域反射计 (ROTDR). 它克服了传统的权衡,实现了同时远程,高分辨率和精确的分布式温度传感.
科学领域:
- 光电子学和光子学
- 分布式传感技术 分布式传感技术
- 对光学系统的信号处理.
背景情况:
- 拉曼光学时域反射计 (ROTDR) 传统上在平衡传感范围,空间分辨率和温度准确性方面面临限制,原因是脉冲持续时间的限制.
- 在传统ROTDR中优化一个性能指标往往会导致其他指标的退化,从而呈现出理论上的权衡.
研究的目的:
- 引入一种新的方法,复杂域正方形波宽跳动脉冲压缩,以克服ROTDR固有的物理限制.
- 为了证明传感范围,空间分辨率和温度精度与脉冲持续时间在分布式温度传感中的脱.
主要方法:
- 实现复杂域正方形波宽-声脉冲压缩.
- 应用匹配过,使用相结合的时间逆转过器来增强信号噪声比.
- 使用复杂域外提取来减轻拉曼相噪声.
主要成果:
- 通过复杂域匹配过实现了15.09dB的信号噪声比增长.
- 通过复杂域外提取成功隔离和去除拉曼相噪声.
- 同时实现了45公里的传感距离,0.5米的空间分辨率和0.11°C的温度准确度.
结论:
- 提出的复杂域脉冲压缩技术有效地打破了ROTDR中的传统权衡,使关键传感参数的同时优化成为可能.
- 该框架为远程,高精度分布式温度传感提供了一个新的范式.
- 该方法可扩展到其他基于散射的系统,如Brillouin和Rayleigh光学时域反射计.
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