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Field Application of Global Positioning System

Field Application of Global Positioning System

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...

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

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...

Types of Global Positioning System Surveys

Types of Global Positioning System Surveys

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...

Introduction to Global Positioning System

Introduction to Global Positioning System

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,...

Errors in Global Positioning System

Errors in Global Positioning System

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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Trajectory Data Analyses for Pedestrian Space-time Activity Study

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Published on: February 25, 2013

GPS-based outdoor activity pattern recording and analysis system.

Yan-Ming Chen, Kuo-Sheng Cheng

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|October 11, 2013

Summary

This summary is machine-generated.

This study introduces a GPS-based system to monitor outdoor activity patterns in aging individuals. Early detection of abnormal behaviors may help identify potential dementia or other mental health concerns.

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Area of Science:

Gerontology
Biomedical Engineering
Data Science

Background:

Early detection of mental health issues in aging populations, such as dementia, is crucial but challenging.
Subtle changes in daily routines and outdoor activity patterns can be early indicators of cognitive decline.

Purpose of the Study:

To design and develop a system for characterizing outdoor activity patterns in the elderly.
To enable early detection of abnormal activities that may signify the onset of dementia or other mental health conditions.

Main Methods:

Integration of tablet PC and Global Positioning System (GPS) for tracking outdoor movements.
Segmentation of GPS data into time frames and representation in vector form for data reduction.
Application of filtering techniques for noise reduction in GPS data.

Main Results:

The developed system successfully records and analyzes outdoor activity patterns.
The system can differentiate abnormal activities from usual patterns, enabling alerts for potential health issues.
Off-line detection of abnormal conditions is achieved through pattern analysis.

Conclusions:

The proposed system offers a novel approach for monitoring the well-being of aging individuals through their outdoor activity.
This technology has the potential to aid in the early identification of cognitive impairments and other mental health concerns.
Further development could integrate this system into broader elder care strategies.