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相关概念视频

Errors in Global Positioning System01:26

Errors in Global Positioning System

38
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,...
38
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

38
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...
38
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

50
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...
50
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

25
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...
25

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Updated: Jun 10, 2025

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通过使用机器学习技术改善室内WiFi定位.

Hanieh Esmaeili Gorjan1, Víctor P Gil Jiménez1

  • 1Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Av. de la Universidad, 30, Leganés, 28911 Madrid, Spain.

Sensors (Basel, Switzerland)
|October 16, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种新的室内定位系统,使用机器学习和分裂与征服策略. 它的平均绝对误差约为1米,为室内位置跟踪提供了精确的解决方案.

关键词:
网格搜索CVCV 网格搜索在 KNN KNN 标签上.没有了,没有了,没有了,没有了.无线网络定位定位 无线网络定位在XGBoost中使用.在 catBoost 里面,你会发现 catBoost 的功能.机器学习是机器学习.随机的森林随机的森林

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科学领域:

  • 计算机科学 计算机科学
  • 工程 工程师 工程师 工程师
  • 地理学就是地质学.

背景情况:

  • 全球定位系统 (GPS) 在户外有效,但在室内环境中有限.
  • 准确的室内定位对于新兴的应用程序和服务至关重要.
  • 现有的室内定位方法经常面临准确性和稳定性的挑战.

研究的目的:

  • 为高精度室内定位提供一种新的架构.
  • 为了利用机器学习技术来改进室内位置估计.
  • 为室内定位任务提供最佳机器学习方法的见解.

主要方法:

  • 实现了室内定位的新型架构.
  • 机器学习技术的应用以减少错误.
  • 使用分裂与征服策略来提高定位精度.

主要成果:

  • 获得了大约1米的度和经度的平均绝对误差 (MAE).
  • 展示了室内定位挑战的精确和实用的解决方案.
  • 确定了用于室内定位的有效机器学习技术.

结论:

  • 拟议的新型架构在室内定位准确度方面取得了重大进展.
  • 机器学习和划分与征服策略对于克服室内定位限制是有效的.
  • 这些发现为开发未来室内定位系统提供了宝贵的资源.