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相关概念视频

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An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
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The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
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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,...
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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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增强的GNSS导航使用中心错误缩扩展卡尔曼波器在非高斯噪声环境中.

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  • 1Department of Electrical Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan.

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概括
此摘要是机器生成的。

本研究介绍了集中错误延长卡尔曼波器 (CEE-EKF) 以提高全球导航卫星系统 (GNSS) 的准确性. CEE-EKF 提高了全球定位系统 (GPS) 在具有非高斯噪声和异常值的挑战性环境中的导航可靠性.

关键词:
在GNSS中使用GNSS.中心错误的.扩展的卡尔曼过器最大电流的标准是最大电流.最低误差的最小误差.多路径效应是多路径效应.其他非高斯噪声

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科学领域:

  • 地理学工程 工程地质学
  • 信号处理 信号处理
  • 导航系统 导航系统

背景情况:

  • 全球导航卫星系统 (GNSS),包括全球定位系统 (GPS),面临多路径效应的信号干扰,挑战精确的状态估计.
  • 传统的扩展卡尔曼过器 (EKF) 在非高斯噪声环境中表现不佳,因为它们依赖最小平均平方误差 (MMSE) 标准.
  • 现有的替代标准,如最小误差 (MEE) 和最大电流标准 (MCC),在处理偏差和实现最佳收方面存在局限性.

研究的目的:

  • 开发一个增强的扩展卡尔曼波器 (EKF),克服了改善GNSS状态估计现有标准的局限性.
  • 通过整合MEE和MCC的优势,引入集中错误 (CEE) 扩展卡尔曼波器 (CEE-EKF).
  • 为了验证CEE-EKF在复杂,非线性GPS环境中与非高斯噪声和异常值的性能.

主要方法:

  • 通过结合最小误差 (MEE) 和最大电流标准 (MCC) 原则,开发中心错误 (CEE) 标准.
  • 将CEE标准集成到扩展的卡尔曼波器框架中,从而形成了CEE-EKF.
  • 使用模拟复杂非线性GPS数据与非高斯噪声和异常情景进行实验验证.

主要成果:

  • 与基于MEE和MCC的单个过器相比,CEE-EKF在降噪方面表现显著优越.
  • 拟议的CEE-EKF表现出增强的稳定性和准确性,特别是在GPS可观测值中存在异常值时.
  • 实验结果证实了CEE-EKF在具有非高斯噪声的复杂非线性GPS环境中的有效性.

结论:

  • CEE-EKF提供了一种有效的解决方案,用于在具有挑战性的现实条件下提高GPS导航的可靠性.
  • 该算法提供了对非高斯噪声和异常值的改进状态估计准确性和稳定性.
  • 该CEE-EKF方法很容易扩展到其他全球导航卫星系统 (GNSS) 应用程序,需要可靠的状态估计.