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相关概念视频

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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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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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
Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

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Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
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Distance Corrections01:15

Distance Corrections

83
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
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Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

180
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
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相关实验视频

Updated: Sep 13, 2025

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
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对无人机目标定位的非线性错误补偿和智能优化方法的研究.

Yinglei Li1, Qingping Hu1, Shiyan Sun1

  • 1Graduate School, Naval University of Engineering, 717 Jiefang Road, Qiaokou District, Wuhan 430030, China.

Sensors (Basel, Switzerland)
|July 30, 2025
PubMed
概括
此摘要是机器生成的。

本研究引入了一种改进的子优化算法 (KYCOA),通过最小化非线性扰动和坐标转换的错误来提高无人机 (UAV) 目标定位精度.

关键词:
蒙特卡洛模拟的蒙特卡洛模拟在空中载有光电子 pods.错误分配的错误分配方法目标定位 目标定位

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科学领域:

  • 航空航天工程 航空航天工程
  • 机器人技术 机器人技术 机器人技术
  • 优化算法 优化算法

背景情况:

  • 无人机中的高精度目标定位受到非线性扰动和累积坐标转换错误的挑战.
  • 多源错误合降低了无人机目标定位的定位精度.

研究的目的:

  • 开发一种有效的错误分配方法,以提高无人机目标定位精度.
  • 为解决无人机多源错误合导致的定位准确度下降的问题.

主要方法:

  • 建立了一个多坐标系统转换模型来分析非线性错误传输.
  • 使用泰勒扩展推导合成错误模型的线性错误转移.
  • 提出了改进的子优化算法 (KYCOA),增强了种群多样性和位置更新机制.

主要成果:

  • 与COA,GWO和WOA相比,KYCOA在模拟中显示了定位误差距的显著减少.
  • 真实飞行测试显示,使用KYCOA.的目标点定位错误平均减少了40%以上.
  • 提出的方法有效地提高了无人机中的目标定位精度和稳定性.

结论:

  • KYCOA算法为优化无人机目标定位中的错误分配提供了一个强大的解决方案.
  • 该方法通过减轻非线性扰动和坐标转换误差,显著提高定位准确性.
  • KYCOA在现实世界无人机应用中被证明是有效的,改善了目标定位性能.