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相关概念视频

Gyroscope: Precession01:24

Gyroscope: Precession

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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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Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
464
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
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Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Errors in Global Positioning System01:26

Errors in Global Positioning System

46
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
46
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

338
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
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相关实验视频

Updated: Jul 5, 2025

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

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用光纤陀螺仪进行动态北方查找的细分交叉相关算法.

Shuwei Fang1, Shanjun Mao1, Yanjun Chen2

  • 1Institute of Remote Sensing and Geographic Information System, Peking University, Beijing 100871, China.

Sensors (Basel, Switzerland)
|January 23, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了细分交叉相关算法,以改善光纤陀螺仪 (FOG) 北方在动态条件下发现精度. 新方法显著减少了由转盘速度动引起的错误,提高了导航系统的性能.

关键词:
分割与征服算法的算法.光纤陀螺仪,光纤陀螺仪的使用.的动是因为.北方的发现发现

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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

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相关实验视频

Last Updated: Jul 5, 2025

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
00:08

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.3K
Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

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科学领域:

  • 导航和定位系统 导航和定位系统
  • 光学工程是指光学工程.
  • 信号处理 信号处理

背景情况:

  • 光纤陀螺仪 (FOG) 对于导航和定位至关重要.
  • 动态的北方寻找需要加速的转盘速度,以获得更快的响应.
  • 增加的转盘速度引入动,降低FOG准确性.

研究的目的:

  • 开发一种新的算法,以减轻由转盘速度动引起的北方查找错误.
  • 建立和分析一个寻找北方的错误模型,考虑FOG自我噪声和转盘动.
  • 通过模拟和实验验证拟议的算法.

主要方法:

  • 实现一个细分的交叉相关算法,用于动态北方查找.
  • 开发一个数学模型用于北方查找错误.
  • 使用FOG系统与模拟和现实世界的实验进行验证.

主要成果:

  • 拟议的算法有效地减少了来自转盘速度不稳定的错误.
  • 模拟和实验显示与开发的错误模型有很强的一致性.
  • 在180°/s,北方查找准确度得到了64%的改进 (0.052°偏差误差).

结论:

  • 分段交叉相关算法为动态北方查找提供了强大的解决方案.
  • 该方法提高了北方寻找系统的速度和准确性.
  • 这种进步对于需要精确和快速导航的应用至关重要.