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相关概念视频

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

90
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...
90
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

121
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...
121
Errors in Global Positioning System01:26

Errors in Global Positioning System

114
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,...
114
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

170
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...
170
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

143
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,...
143
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

120
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
120

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相关实验视频

Updated: Sep 14, 2025

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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基于改进的采样盒和模糊推理的无线传感器网络定位技术.

Ningyun Dan1, Lun Zhao2, Wenjin Pan3

  • 1College of Physics and Information Engineering, Zhaotong University, Zhaotong, 657000, China.

Scientific reports
|July 18, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了使用模糊集群和高斯模型改进的无线传感器网络定位技术. 它显著提高了本地化准确性和效率,特别是在大型网络中.

关键词:
通信半径 通信半径模糊的推理 模糊的推理多维高斯模型是多维高斯模型.节点定位的位置 节点定位定位精度 定位精度 定位精度一个采样盒.无线传感器网络是无线传感器网络.

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相关实验视频

Last Updated: Sep 14, 2025

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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 网络工程 网络工程

背景情况:

  • 精确的定位对于无线传感器网络 (WSN) 应用至关重要.
  • 传统的WSN定位方法在资源有限的环境中具有较低的准确性和效率.

研究的目的:

  • 开发一个改进的WSN定位技术,解决准确性和效率的局限性.
  • 在资源有限的WSN中增强本地化性能.

主要方法:

  • 提出了一种WSN定位技术,利用优化的采样盒和模糊推理.
  • 采用时间序列优化的模糊聚类算法和多维高斯模型.
  • 优化采样盒参数以改善本地化.

主要成果:

  • 在基准数据集上使用模糊集群算法实现了0.89的稳定兰德系数.
  • 在40%的信标节点中,平均定位误差低至0.21米.
  • 显示的响应时间为0.41 ms (50节点) 和0.72 ms (200节点),表现优于对比模型.

结论:

  • 新型号在各种通信半径和信标节点比率上提供高定位精度和快速响应时间.
  • 该技术显示出出色的多功能性和效率,特别是在大型WSN部署中.
  • 为环境监测和工业自动化领域的WSN应用提供了显著的进步.