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相关概念视频

Errors in Global Positioning System01:26

Errors in Global Positioning System

24
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,...
24
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

43
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...
43
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

17
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...
17
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

22
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...
22
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

38
The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
38
Meridians01:28

Meridians

285
In surveying, meridians are vital reference lines to measure directions and establish accurate land orientations. Meridians run from the north to the south poles, providing a stable framework for angular measurements and mapping. Meridians are fundamental in survey design, with the primary types being astronomic, magnetic, and assumed meridians. Each type offers distinct benefits and limitations, selected based on the project's scale and precision needs.The astronomic meridian is aligned with...
285

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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
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精确定位方法 结合优化混合神经网络用于地磁定位与多功能死计算.

Suqing Yan1,2, Baihui Luo2, Xiyan Sun3

  • 1Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China.

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PubMed
概括
此摘要是机器生成的。

本研究介绍了一种使用粒子群优化 (PSO) 的新型聚变定位算法,以增强地磁定位和标题估计. 该方法提高了基于位置的服务的准确性和稳定性.

关键词:
死亡的计算死亡的计算.标题估计 标题估计一个分层的BiLSTM.室内局部化 室内局部化粒子群集优化 粒子群集优化

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科学领域:

  • 地理学工程 工程地质学
  • 计算机科学 计算机科学
  • 人工智能的人工智能

背景情况:

  • 基于位置的服务 (LBS) 提供了显著的经济和社会优势.
  • 地磁学提供了一个无处不在的,低成本的,可访问的本地化资源.
  • 现有的地磁定位技术面临着位置模两可的挑战.

研究的目的:

  • 开发一个强大而准确的融合本地化算法.
  • 为了克服传统地磁定位方法的局限性.
  • 为了提高航向估计,以改善死亡计算.

主要方法:

  • 为地磁定位开发了一个五维混合LSTM (5DHLSTM) 神经网络,使用粒子群优化 (PSO) 优化参数.
  • 八维BiLSTM (8DBiLSTM) 算法用于在行人死亡计算 (PDR) 中准确的方向估计.
  • 通过将地磁定位与使用扩展卡尔曼波器 (EKF) 的改进的PDR (IPDR) 集成,实现了融合定位.

主要成果:

  • 拟议的PSO-5DHLSTM-IPDR方法在实验验证中显示出更好的定位精度.
  • 该算法在不同的场景中表现出良好的稳定性和灵活性.
  • 通过8DBiLSTM算法实现了更高的定位精度,有助于整体定位性能.

结论:

  • 开发的融合定位算法有效地解决了地磁定位中的位置模糊性.
  • 将PSO优化的5DHLSTM和8DBiLSTM与基于EKF的IPDR集成,为LBS提供了一个优越的解决方案.
  • 该方法显示了需要精确可靠的定位的实际应用的巨大潜力.