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相关概念视频

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

16
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...
16
Errors in Global Positioning System01:26

Errors in Global Positioning System

23
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,...
23
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

19
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...
19
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

42
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...
42

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相关实验视频

Updated: May 14, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
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在3D地形中优化多节点小型雷达网络部署.

Zhiyi Wang1,2, Min Wang1, Xinghui Wu1

  • 1National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China.

Sensors (Basel, Switzerland)
|April 12, 2025
PubMed
概括
此摘要是机器生成的。

在复杂的地形中部署雷达网络需要先进的建模. 本研究介绍了抛物线方程模型 (PEM) 和分层有效覆盖率 (LECR) 以优化雷达网络部署.

关键词:
部署优化部署的优化层层的有效覆盖率 层层的有效覆盖率雷达网络 雷达网络 雷达网络无线电波传播的传播方式

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科学领域:

  • 电气工程 电气工程
  • 信号处理 信号处理
  • 地理空间分析是什么

背景情况:

  • 城市和山区的雷达网络部署受到地形的挑战.
  • 现有的优化方法使用简化的传播模型,忽视基于高度的覆盖范围变化.
  • 精确的无线电波传播建模考虑到3D地形对于有效的雷达部署至关重要.

研究的目的:

  • 将抛物线方程模型 (PEM) 引入用于考虑到地形的雷达网络部署.
  • 建议分层有效覆盖率 (LECR) 作为一个优化目标.
  • 在复杂的地形中优化多节点小型雷达网络.

主要方法:

  • 抛物线方程模型 (PEM) 适用于3D地形中的雷达传播.
  • 层级有效覆盖率 (LECR) 定义是为了评估跨海拔层的覆盖率.
  • 无主导排序基因算法III (NSGA-III) 用于多目标优化.

主要成果:

  • 抛物线方程模型 (PEM) 在各种地形中提供比更简单的模型更准确的覆盖率预测.
  • 层级有效覆盖率 (LECR) 有效地指导了优化过程.
  • 考虑到地形限制,NSGA-III成功优化了雷达网络部署.

结论:

  • 纳入抛物线方程模型 (PEM) 显著改善了复杂地形中的雷达网络部署策略.
  • 拟议的分层有效覆盖率 (LECR) 和NSGA-III为优化雷达网络性能提供了有效的方法.
  • 这项研究提高了雷达网络在具有挑战性的地理环境中的可靠性和效率.