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相关概念视频

Gyroscope: Precession01:24

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Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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相关实验视频

Updated: Apr 13, 2026

Implementation of a Reference Interferometer for Nanodetection
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高性能加速度计阵列,具有使用参考干扰计架构进行曲脉冲调制的高性能加速度计阵列.

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    此摘要是机器生成的。

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    科学领域:

    • • 光学工程 视觉工程
    • • 传感器技术 • 传感器技术
    • • 信号处理 • 信号处理

    背景情况:

    • •当前加速度计技术的局限性包括噪音和有限的动态范围.
    • •光纤传感器为高精度测量提供了潜力,但需要先进的信号处理.
    • • 激光源的波动和环境噪声影响加速度计的性能.

    研究的目的:

    • • 展示一款高性能光纤磁盘加速度计.
    • • 提高加速度测量精度和降噪.
    • • 增强信号噪声比 (SNR) 和动态范围.

    主要方法:

    • •采用了与参考干扰仪架构的声脉冲解调.
    • • 利用匹配过处理来提高SNR和空间分辨率.
    • • 实现了二次时间域差异解封 (TDU) 算法.

    主要成果:

    • • 在5-800Hz带宽上达到30.97rad/g的灵敏度.
    • • 在1-20 Hz范围内证明了12.84 dB的相位降噪.
    • • 显示高频噪声底值为-105dB/hz,超过智商调节的15dB.
    • •使用TDU算法将动态范围从85.93dB扩大到106.59dB.

    结论:

    • • 拟议的光纤加速度计与的脉冲解调提供了高精度和有效的噪声抑制.
    • • 与传统方法相比,该系统展示了优越的性能指标.
    • • 增强的动态范围可在扩展的光谱带宽中轻松检测无扭曲的加速.