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相关概念视频

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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Radiation: Applications01:17

Radiation: Applications

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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
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Area Computation by the Alternative Coordinate Method01:24

Area Computation by the Alternative Coordinate Method

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The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
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In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
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相关实验视频

Updated: Jul 20, 2025

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
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加速射线发射方法,用于在广的城市地区进行高效的现场覆盖研究.

Josefa Gómez1, Abdelhamid Tayebi1, Carlos J Hellín1

  • 1Computer Sciences Department, University of Alcalá, 28801 Alcalá de Henares, Spain.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
概括

本研究介绍了一种用于城市移动无线电场覆盖的快速计算机工具. 它使用GPU加速的光线跟踪方法来有效地分析无线电波传播.

关键词:
加速射击和反弹射线的加速射击和反弹射线的加速射线.传播传播传播的传播射线发射 射线发射 射线发射射线追踪 (ray tracing) 是一种光线追踪技术.

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科学领域:

  • 电气工程 电气工程
  • 计算机科学 计算机科学
  • 电磁学 电磁学 电磁学 电磁学

背景情况:

  • 城市移动无线电系统需要高效的现场覆盖率研究.
  • 准确的无线电波传播预测对于系统设计至关重要.

研究的目的:

  • 为城市移动无线电现场覆盖率研究开发一个快速高效的计算机工具.
  • 为了利用GPU并行处理来加速射线跟踪.

主要方法:

  • 实施一种加速和定制的射线发射方法.
  • 使用一个光线跟踪可编程框架,优化为GPU.
  • 使用PlotOptiX API进行定制,并应用电磁方程.

主要成果:

  • 证明了拟议的计算机代码的正确运行.
  • 能够追踪每射线的大量衍射和反射.
  • 在广泛的城市地区使用测量平面作为接收器实现了快速预测.

结论:

  • 开发的工具为城市移动无线电现场覆盖率研究提供了快速有效的解决方案.
  • 用GPU加速的光线跟踪方法显著提高了模拟速度和能力.