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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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 short distances...

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相关实验视频

Updated: Jun 20, 2026

Quantitative Locomotion Study of Freely Swimming Micro-organisms Using Laser Diffraction
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启用DVS快速光束跟踪,用于水下无线激光通信.

Kuokuo Zhang, Xiaohe Dong, Caiming Sun

    Optics express
    |November 11, 2025
    PubMed
    概括

    本研究介绍了一种使用动态视觉传感器 (DVS) 和PID控制的快速光束追踪系统,用于稳定的水下无线激光通信 (UWLC). 该系统实现了毫秒级别的跟踪,这对于减轻水下干扰至关重要.

    科学领域:

    • 光学工程是指光学工程.
    • 机器人和控制系统 机器人和控制系统
    • 海洋学 海洋学 海洋学

    背景情况:

    • 水下无线激光通信 (UWLC) 对于深海勘探和运营至关重要.
    • 维护稳定,高数据速率的UWLC是具有挑战性的,因为千秒级的水下干扰,如流动和波浪.
    • 现有的追踪技术很难弥补水下干扰的快速发生.

    研究的目的:

    • 为UWLC链接提出一种新的快速光束跟踪方案.
    • 为了减轻水下干扰,并确保链接稳定性和高数据速率.
    • 提高水下通信系统的可靠性.

    主要方法:

    • 实现动态视觉传感器 (DVS) 的高时间分辨率光点心脏检测 (<1 ms).
    • 整合一个比例-整数-导数 (PID) 控制算法用于实时光束对齐.
    • 开发一个具有11毫秒响应时间的闭环控制系统.

    主要成果:

    • 该DVS-PID系统实现了光束采集的时间分辨率<1ms,这是已知的水下应用中最高的时间分辨率.
    • 实时光束对齐在11毫秒的闭环控制周期内成功演示.
    • 实验验证证了该系统在模拟水下干扰下跟踪的有效性.

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    结论:

    • DVS和PID算法的组合为UWLC提供了一个简单,快速和有效的光束跟踪解决方案.
    • 这项技术对于克服水下通信方面的挑战和实现未来的突破至关重要.
    • 拟议的方法显著提高了水下激光通信链路的稳定性和可靠性.