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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Quantifying Distance Overestimation From Global Positioning System in Urban Spaces
American journal of public health (1971), v 106(4), pp 651-653
Apr 2016
PMID: 26890178
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
To investigate accuracy of distance measures computed from Global Positioning System (GPS) points in New York City.
We performed structured walks along urban streets carrying Globalsat DG-100 GPS Data Logger devices in highest and lowest quartiles of building height and tree canopy cover. We used ArcGIS version 10.1 to select walks and compute the straight-line distance (Geographic Information System-measured) and sum of distances between consecutive GPS waypoints (GPS-measured) for each walk.
GPS distance overestimates were associated with building height (median overestimate = 97% for high vs 14% for low building height) and to a lesser extent tree canopy (43% for high vs 28% for low tree canopy).
Algorithms using distances between successive GPS points to infer speed or travel mode may misclassify trips differentially by context. Researchers studying urban spaces may prefer alternative mode identification techniques.
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Details
- Title
- Quantifying Distance Overestimation From Global Positioning System in Urban Spaces
- Creators
- Stephen J Mooney - SUNY New PaltzDaniel M Sheehan - SUNY New PaltzGarazi Zulaika - SUNY New PaltzAndrew G Rundle - SUNY New PaltzKevin McGill - SUNY New PaltzMelika R Behrooz - SUNY New PaltzGina Schellenbaum Lovasi - SUNY New Paltz
- Publication Details
- American journal of public health (1971), v 106(4), pp 651-653
- Grant note
- K01 HD067390 / NICHD NIH HHS K01HD067390 / NICHD NIH HHS
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Urban Health Collaborative
- Web of Science ID
- WOS:000375913000028
- Scopus ID
- 2-s2.0-84961616421
- Other Identifier
- 991020100195304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Public, Environmental & Occupational Health