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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

118
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...
118

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相关实验视频

Updated: Sep 11, 2025

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
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基于光子学的简单微波频率和功率测量系统.

Chongjia Huang, Helong Zhang, Kun Zhi

    Optics express
    |August 13, 2025
    PubMed
    概括

    本研究介绍了用于射频信号分析的微波光子系统. 它准确地测量无线电频率 (RF) 信号频率和功率,使用双平行马赫-泽恩德调制器和光学波器.

    科学领域:

    • 光子学是指光子学的使用方法.
    • 微波工程 微波工程
    • 信号处理 信号处理

    背景情况:

    • 在现代通信系统中,精确测量射频 (RF) 信号参数至关重要.
    • 现有的射频信号频率和功率测量的方法可能是复杂的或范围有限的.
    • 微波光子系统为高性能信号分析提供了潜力.

    研究的目的:

    • 介绍一种用于同时测量射频信号频率和功率的新型微波光子系统.
    • 为了展示一个结构简单,响应快,操作范围广的系统.
    • 通过实验测量来验证系统的性能.

    主要方法:

    • 使用双平行马赫-泽恩德调制器 (DP-MZM) 和光学带通波器 (OBPF).
    • 采用牙波来扫除调制器偏差电压,在光检测后产生低频正弦波.
    • 使用增益和相位探测器测量正弦波的峰值电压和相位.

    主要成果:

    • 成功测量了5至20 GHz范围内的RF信号频率.
    • 精确确定RF信号功率级别从-10到17dBm.
    • 该系统展示了一个简单,紧的设计,具有强大的性能.

    更多相关视频

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    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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    相关实验视频

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    结论:

    • 拟议的微波光子系统为射频信号频率和功率测量提供了有效的解决方案.
    • 该系统的设计在简单性,速度和操作范围方面具有优势.
    • 实验验证证证实了该系统对实际射频信号分析的能力.