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Related Concept Videos

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

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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...
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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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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...
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Instrument Calibration01:12

Instrument Calibration

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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...
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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: Marking Boundaries of a Site Using a Compass01:12

Design Example: Marking Boundaries of a Site Using a Compass

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Marking site boundaries using a compass is a precise surveying technique that ensures the accuracy of boundary delineation. The process begins by using provided site details, including the bearings and lengths of each boundary line. The initial step involves calculating latitudes and departures for all sides of the site. This computation verifies that the traverse is free of errors, ensuring a closed and accurate boundary.The process starts at a known point, such as Point A, which is often...
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Distance Corrections01:15

Distance Corrections

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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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Target control point position calibration based on coordinate measuring machine and global bundling optimization

Min Zhao1, Xing Ma1, Gang Yi Hu1

  • 1School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

The Review of Scientific Instruments
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Summary
This summary is machine-generated.

A new calibration method simplifies coordinate measurement systems by using a global bundle algorithm for precise control point positioning. This enhances accuracy, especially for large targets, improving industrial and robotic applications.

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Area of Science:

  • Metrology and Measurement Science
  • Computer Vision and Image Processing
  • Robotics and Automation

Background:

  • Target-based coordinate measurement systems are crucial for spatial positioning and precision tasks.
  • System accuracy heavily relies on the precise calibration of control point positions.
  • Existing methods can be complex, requiring individual spatial calculations for each control point.

Purpose of the Study:

  • To propose a simplified and accurate calibration method for target-based coordinate measurement systems.
  • To improve the precision of control point position calibration.
  • To enhance the overall accuracy of coordinate measurement systems in various applications.

Main Methods:

  • A novel calibration method utilizing a traditional coordinate measuring machine and a global bundle algorithm.
  • Eliminates the need for individual spatial position calculations of control points.
  • Introduces a stitching method for large targets using near-sighted control points.

Main Results:

  • The global bundle algorithm simplifies the calibration process by obtaining all control point positions simultaneously.
  • Simulation shows target motion range within the field of view is key to visual calibration accuracy.
  • Experimental results show standard deviations of 0.01 mm (x, y) and 0.08 mm (z) using the proposed method.

Conclusions:

  • The proposed calibration method offers a simplified and highly accurate approach for target-based coordinate measurement systems.
  • The method achieves high precision, comparable to or exceeding traditional methods, particularly for large targets.
  • This advancement has significant implications for industrial manufacturing, robot navigation, and shipbuilding precision.