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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

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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...
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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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Introduction to Global Positioning System01:30

Introduction to Global Positioning System

53
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,...
53
Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

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The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
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Errors in Global Positioning System01:26

Errors in Global Positioning System

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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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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

54
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...
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相关实验视频

Updated: Jun 18, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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空间-地面集成移动通信系统的分布式资源分配方法

Tingyin Zhao1,2, Zhidu Li1,2

  • 1School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China.

Sensors (Basel, Switzerland)
|July 27, 2024
PubMed
概括
此摘要是机器生成的。

本研究引入了一种新的边缘决策方法,用于集成的空间-地面网络,使用DP-DQN模型来增强移动站资源配置. 这种方法有效地减少了网络开销,并提高了未来通信系统的访问成功率.

关键词:
在GNSS中使用GNSS.网络切片是指网络的切片.资源的分配资源的分配.空间地面集成系统集成系统

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Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
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相关实验视频

Last Updated: Jun 18, 2025

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科学领域:

  • 通信工程 通信工程 通信工程
  • 网络架构 网络架构
  • 网络中的人工智能

背景情况:

  • 未来的通信系统需要无整合地面,无人机和卫星网络.
  • 越来越多的用户需求和网络复杂性需要创新的资源管理策略.
  • 现有的网络架构在处理动态用户激增和降低开销方面面临挑战.

研究的目的:

  • 提出一个创新的空间-地面集成通信系统架构.
  • 为移动站 (MSs) 开发一个高效的网络资源分配决策模型.
  • 为了减少核心网络的开销,并在动态环境中提高成功访问率.

主要方法:

  • 为集成网络利用先进的网络切片技术.
  • 引入边际移动站 (MS) 辅助的网络资源分配决策架构.
  • 开发和应用深度政策Q网络 (DP-DQN) 模型,以加强各成员国的决策.
  • 实施反机制,以持续调整和准确模型.

主要成果:

  • 基于DP-DQN的边缘决策方法显著减轻了核心网络的开销.
  • 与传统方法相比,成功访问比率的明显改善.
  • 通过广泛的模拟和实验测试验证有效性.

结论:

  • 拟议的基于DP-DQN的边缘决策方法为太空-地面集成通信系统提供了一个有前途的解决方案.
  • 支持MS的架构和反机制提高了网络的适应性和效率.
  • 这种方法有效地解决了未来用户激增和网络动态带来的挑战.