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相关概念视频

Errors in Global Positioning System01:26

Errors in Global Positioning System

34
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,...
34
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

26
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...
26
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

48
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
48
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

20
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
20

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相关实验视频

Updated: May 31, 2025

Trajectory Data Analyses for Pedestrian Space-time Activity Study
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在室内定位系统中提高定位精度和减少处理时间:对AI模型进行比较分析.

Salwa Sahnoun1,2, Rihab Souissi1,2,3, Sirine Chiboub1,2,3

  • 1Laboratory of Signals, Systems, Artificial Intelligence and Networks (SM@RTS), Digital Research Center of Sfax (CRNS), Sfax University, Sfax 3021, Tunisia.

Sensors (Basel, Switzerland)
|January 25, 2025
PubMed
概括

循环神经网络 (RNN) 模型为室内定位系统提供了卓越的性能,实现了高定位精度和快速处理时间. 这项研究比较了各种AI模型,发现RNN是移动跟踪中最有效的.

关键词:
在这里,我们可以看到AIAIAI.一个年龄,一个年龄.这是一个ICM-20948传感器.卡尔曼过器可以过.这是LSTM的LSTM.一个RNN RNN在RSSI测量过程中,RSSI测量室内定位系统 室内定位系统神经网络的神经网络的神经网络

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Movement Retraining using Real-time Feedback of Performance
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相关实验视频

Last Updated: May 31, 2025

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Published on: February 25, 2013

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Combining Eye-tracking Data with an Analysis of Video Content from Free-viewing a Video of a Walk in an Urban Park Environment
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科学领域:

  • 人工智能的人工智能
  • 机器人技术 机器人技术 机器人技术
  • 传感器融合式传感器

背景情况:

  • 室内定位系统 (IPS) 对于移动跟踪和导航至关重要.
  • 现有的IPS经常面临准确性和处理速度方面的挑战.
  • 人工智能模型为增强IPS性能提供了潜力.

研究的目的:

  • 为了比较评估室内定位的AI模型.
  • 评估不同AI算法的本地化准确性和处理时间.
  • 为了确定移动跟踪应用程序的最佳AI模型.

主要方法:

  • 人工神经网络 (ANN),长期短期记忆 (LSTM),循环神经网络 (RNN) 和卡尔曼过器的比较分析.
  • 使用了接收信号强度指标 (RSSI) 和9轴ICM-20948传感器数据.
  • 实施数据清理和特征选择技术以减少错误.

主要成果:

  • 循环神经网络 (RNN) 模型表现出最佳性能.
  • 实现了0.247m的定位错误,处理延迟为0.077s.
  • 在12米×9.5米的区域内使用四个杆评估性能.

结论:

  • 循环神经网络 (RNN) 对室内定位非常有效.
  • 基于测试和验证数据的模型选择对于有效的移动跟踪至关重要.
  • 人工智能的进步显著提高了IPS的本地化准确性和效率.