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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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相关实验视频

Updated: May 6, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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对于DFB基于激光的声学传感器进行双介导测试.

Mehmet Ziya Keskin1, Abdulkadir Yentur1, Ibrahim Ozdur1

  • 1Department of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara 06510, Türkiye.

Sensors (Basel, Switzerland)
|May 14, 2025
PubMed
概括
此摘要是机器生成的。

这项研究使用马赫-泽恩德干扰仪增强光纤水声器 (FOH),以改善水下声学传感. 新方法提高了动态范围,为监控和监控提供了更好的性能.

关键词:
声学传感感应 声学传感感应纤维激光器 纤维激光器有光纤传感器的传感器.电话中的水声机.干扰仪干扰仪干扰仪

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相关实验视频

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科学领域:

  • 工程 工程师 工程师 工程师
  • 声学传感 声学传感 声学传感
  • 光学物理学的光学物理学

背景情况:

  • 传统的压电式水声机具有尺寸,电磁干扰和腐蚀等局限性.
  • 光纤声机 (FOH) 具有机械灵活性和抗恶劣环境等优势.
  • 分布反 (DFB) 激光器对干扰很敏感,可以通过波长变化检测声信号.

研究的目的:

  • 介绍一款用于光纤水电话的增强式审讯机制.
  • 提高基于阶段的测量的成本效益和分辨率.
  • 扩大FOH系统的动态范围,用于水下应用.

主要方法:

  • 利用马赫-泽恩德干扰仪将激光波长的变化转化为可测量的相位偏差.
  • 实现了与标准解调算法集成的双干扰度设置.
  • 利用分布式反 (DFB) 激光器对外部干扰的灵敏度.

主要成果:

  • 实现了具有成本效益和高分辨率的基于阶段的测量.
  • 在1kHz时,动态范围从125dB显著增加到139dB.
  • 在扩大动态范围的同时,保持了无损的低噪声水平.

结论:

  • 增强的审讯机制大大提高了FOH的性能.
  • 扩大的动态范围提高了FOH系统在水下环境中的实用性.
  • 这项技术支持关键应用,包括水下监视,潜艇通信和海洋生态系统监测.