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相关概念视频

Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

53
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...
53
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

41
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...
41
Errors in Global Positioning System01:26

Errors in Global Positioning System

40
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,...
40
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

27
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...
27
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

48
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,...
48
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

64
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
64

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Using Pharmacological Manipulation and High-precision Radio Telemetry to Study the Spatial Cognition in Free-ranging Animals
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技术说明:评估GPS传感器的准确性,使用实时动力学设备来跟踪牲畜.

Biquan Zhao1,2, Rebecca L McDermott1, Galen E Erickson1

  • 1Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.

Journal of animal science
|August 27, 2024
PubMed
概括

商用GPS传感器显示牲畜跟踪的精度可变,从2.46米到11.06米. 评估传感器定位精度对于可靠的牲畜行为和健康监测至关重要.

关键词:
牛的追踪 牛的追踪全球定位系统全球定位系统牧场管理 牧场管理定位准确度 定位准确度 定位准确度精确的畜牧管理 精确的畜牧管理

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科学领域:

  • 动物科学动物科学
  • 生态生态学 生态生态学
  • 地理学工程 工程地质学

背景情况:

  • 全球定位系统 (GPS) 传感器越来越多地用于牲畜跟踪,帮助监测行为,分布和健康.
  • 从GPS数据中解释牲畜行为是具有挑战性的,因为固有的定位不准确性.
  • 准确的定位数据对于确定放牧密度和识别异常移动模式至关重要.

研究的目的:

  • 评估用于家畜跟踪的三种商业GPS传感器类型的定位准确性.
  • 为了比较不同GPS传感器的精度,使用测量级的实时动力学 (RTK) 设备.
  • 为提高GPS在畜牧业研究和管理中的可靠性提供必要数据.

主要方法:

  • 评估了三种商业GPS传感器类型与调查级实时动力学 (RTK) 设备进行对比.
  • 详细介绍了用于准确性评估的程序和方程.
  • 将记录的GPS位置与RTK衍生的参考位置进行比较.

主要成果:

  • 在GPS传感器类型之间发现了定位精度的统计学上显著差异 (P < 0.05).
  • 在95%的概率水平 (CEP95) 上,循环错误概率 (CEP) 从2.46到11.06米不等.
  • 在不同传感器和不同品牌之间,准确性差异很大.

结论:

  • 商用GPS传感器的定位准确度是可变的,并且取决于品牌.
  • 评估个别GPS传感器的准确性对于可靠的牲畜监测和数据解释至关重要.
  • 这些发现对动物科学家,生态学家和使用GPS技术的生产者至关重要.