Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Distance Corrections01:15

Distance Corrections

267
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...
267
Adjusting a Traverse01:12

Adjusting a Traverse

354
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
354
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

377
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...
377
Instrument Calibration01:12

Instrument Calibration

675
Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
675
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

383
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
383
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

862
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
862

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Preflight Calibration and Performance Assessment of the Geostationary Interferometric Infrared Sounder (GIIRS) Onboard the FengYun-4B Satellite.

Sensors (Basel, Switzerland)·2026
Same author

Hybrid zeolitic imidazolate frameworks with catalytically active TO4 building blocks.

Angewandte Chemie (International ed. in English)·2010
Same author

Whiter matter abnormalities in medication-naive subjects with a single short-duration episode of major depressive disorder.

Psychiatry research·2010
Same author

A new comorbidity index: the health-related quality of life comorbidity index.

Journal of clinical epidemiology·2010
Same author

S-adenosylmethionine inhibits the growth of cancer cells by reversing the hypomethylation status of c-myc and H-ras in human gastric cancer and colon cancer.

International journal of biological sciences·2010
Same author

Nano-sized SnSbAgx alloy anodes prepared by reductive co-precipitation method used as lithium-ion battery materials.

Journal of nanoscience and nanotechnology·2010

相关实验视频

Updated: Jan 13, 2026

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.3K

基于空间距离校正的大孔天线表面测量的校准方法

Xuesong Chen1,2,3, Yaopu Zou2,3, Changpei Han2,3

  • 1University of Chinese Academy of Sciences, Beijing 100049, China.

Sensors (Basel, Switzerland)
|January 10, 2026
PubMed
概括

这项研究引入了一种新的空间距离校正方法,用于校准卫星天线的FMCW激光扫描系统. 新的校准显著提高了距离的准确性和3D点云的准确性.

关键词:
几何结构错误的几何结构错误非线性优化的非线性优化光学轴偏差的偏差是指光学轴的偏差.空间距离校正 空间距离校正

更多相关视频

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
11:57

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Published on: May 20, 2013

13.9K
Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

747

相关实验视频

Last Updated: Jan 13, 2026

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.3K
Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
11:57

Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

Published on: May 20, 2013

13.9K
Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

747

科学领域:

  • 光学和光子学 在光学和光子学.
  • 地质测量和遥感技术
  • 航空航天工程 航空航天工程

背景情况:

  • 高精度测量系统对于卫星天线校准至关重要.
  • 对于FMCW (频率调制连续波) 激光扫描系统的现有方法面临精度限制.
  • 对于像Fengyun-4这样的卫星的大孔天线的轨道校准需要强大的解决方案.

研究的目的:

  • 开发和验证FMCW激光扫描测量系统的空间距离校正方法.
  • 为了解决大孔卫星天线在轨道上的精度校准问题.
  • 提高3D空间测量的精度和可靠性.

主要方法:

  • 为FMCW系统建立了一个全面的错误模型,包括13个关键参数.
  • 使用高精度参考尺度和平面目标的校准场.
  • 应用空间距离校正和非线性最小平方优化来估计错误参数.
  • 在多种操作条件下实施和验证了校准方案.

主要成果:

  • 将两个点之间的相对距离的根平均平方 (RMS) 误差从17.5毫米减少到2.3毫米.
  • 实现了一个ICP (代最接近点) 注册残余空间点云的2.5毫米.
  • 在校准后,点云形状保真度提高了86.6%.
  • 证明了该方法的有效性和概括能力.

结论:

  • 拟议的空间距离校正方法有效校准FMCW激光扫描系统.
  • 该技术显著提高了卫星应用的测量精度和点云质量.
  • 这项研究为激光雷达系统的空间3D校准提供了可靠的方法.