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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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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
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,...
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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...
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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

24
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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相关实验视频

Updated: Jun 9, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
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关于控制无人机飞行LTE移动网络性能参数的实验研究

Janis Braunfelds1, Gints Jakovels2, Ints Murans1

  • 1Institute of Photonics, Electronics and Telecommunications, Riga Technical University, LV-1048 Riga, Latvia.

Sensors (Basel, Switzerland)
|October 26, 2024
PubMed
概括
此摘要是机器生成的。

这项研究确定了无人机物流的最佳移动网络关键性能指标 (KPI),分析了不同高度的信号强度和质量. 建议值确保无人机通信网络的可靠性.

关键词:
这就是为什么LTE是LTE.下载链接下载链接下载链接下载链接无人机 无人机 无人机移动网络的移动网络网络.在这里,我们可以看到PingPingPing.参考信号接收到的功率信号收到的质量参考信号的质量.信号对干扰和噪声的比率.无人驾驶飞行器是一种无人驾驶飞行器.上行链接 (Uplink) 是一个上行链接.

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科学领域:

  • 移动通讯 移动通讯 移动通讯
  • 网络工程 网络工程
  • 航空航天物流 航空航天物流

背景情况:

  • 无人机物流越来越依赖于强大的移动网络.
  • 了解不同高度的网络性能对于可靠的无人机操作至关重要.

研究的目的:

  • 分析无人机物流移动通信网络的定量质量参数.
  • 为未来的无人机通信系统建立推的关键性能指标 (KPI).

主要方法:

  • 使用无人机在40-110米的高度进行网络参数 (RSRP,RSRQ,SINR,UL/DL速度,ping) 的实验测量.
  • 来自拉脱维亚移动运营商基础设施的数据分析.
  • 在LTE标准之间自动切换以进行全面分析.

主要成果:

  • 确定了关键网络参数:参考信号接收功率 (RSRP),参考信号接收质量 (RSRQ) 和信号对干扰和噪声比 (SINR).
  • 确定了最佳的KPI值:RSRP在-100dBm,RSRQ在-16dB,SINR在-5dB,下链/上链速度在4096kbps,以及50ms的ping.

结论:

  • 为支持可控无人机飞行的移动网络制定了具体的,定量化的KPI建议.
  • 倡导将这些关键关键指标整合到网络覆盖数字双胞胎 (DT) 模型中,以加强规划和管理.