Accuracy evaluation of digital elevation model created using handheld global positioning system receivers
Other Title(s)
تقييم دقة نموذج الارتفاع الرقمي المنتج باستخدام متسلمات نظام تحديد المواقع العالمية المحمولة
Author
Source
Issue
Vol. 22, Issue 6 (30 Jun. 2016), pp.137-148, 12 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2016-06-30
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Topics
Abstract EN
This study aims to assess the accuracy of digital elevation model (DEM) created with utilization of handheld Global Positioning System (GPS) and comparing with Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model (ASTER GDEM), version 2.
It is known that the quality of the DEM is affected by both of accuracy of elevation at each pixel (absolute accuracy) and accuracy of presented morphology (relative accuracy).
The University of Baghdad, Al Jadriya campus was selected as a study area to create and analysis the resulting DEM.
Additionally, Geographic Information System (GIS) was used to visualize, analyses and interpolate GPS track points (elevation data) of the study area.
In this research, three additional DEMs were created using 60%, 30% and 15% of the all GPS track points to deduce the effect of the number of the included points on the accuracy of the resulting DEM.
The study findings show a high resolution for the resulting DEM less than 5m when taking into consideration all GPS tracking points that observed in this research.
Moreover, the resulting DEM has relative accuracy better than absolute accuracy and reaches to around 2m.
By comparing with ground control points (reference points), the quality of handheld GPS DEM shows considerable improvement better than ASTER GDEM.
Thus, this study indicates to improve the accuracy level of handheld GPS DEM by about 40 % with increasing the observed number of GPS track points to twice.
American Psychological Association (APA)
Husayn, Zahra Izz al-Din. 2016. Accuracy evaluation of digital elevation model created using handheld global positioning system receivers. Journal of Engineering،Vol. 22, no. 6, pp.137-148.
https://search.emarefa.net/detail/BIM-689598
Modern Language Association (MLA)
Husayn, Zahra Izz al-Din. Accuracy evaluation of digital elevation model created using handheld global positioning system receivers. Journal of Engineering Vol. 22, no. 6 (Jun. 2016), pp.137-148.
https://search.emarefa.net/detail/BIM-689598
American Medical Association (AMA)
Husayn, Zahra Izz al-Din. Accuracy evaluation of digital elevation model created using handheld global positioning system receivers. Journal of Engineering. 2016. Vol. 22, no. 6, pp.137-148.
https://search.emarefa.net/detail/BIM-689598
Data Type
Journal Articles
Language
English
Notes
Includes appendices : p. 143-148
Record ID
BIM-689598