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TOWARDS A UBIQUITOUS CITY: WIFI SIGNAL SURVEY AND MAPPING
FOR THE TOWN OF BLACKSBURG
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Objective
To better understand the wireless network connectivity throughout Blacksburg and the Virginia Tech Campus.
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Relevance to Planning• Safety and emergency planning• Interaction with public space• Civic engagement• Communicating ideas
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data and Devices
• Information Recorded: scan ID, scan subID, date/time, XY location, MACaddress, SSID, security, signal strength, and radio frequency
• Device: Samsung Dart Android & Kindle Fire
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Scanner Settings
Wi-Fi Scanner application developed by CGIT
• WiFi Access• Dual Scan Mode• Zoom Features• Manual Pin-Point location• Points cataloged on device
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Procedure• Scanned every 30 feet (10 strides)• 180 degree survey pivots• Data converted to shape file then filtered by
various attributes
IDW interpolation:• cell size=1 ft• power of 2• fixed radius of 20 ft
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data Source: http://www.lib.vt.edu/subjects/maps/
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data Source: http://www.lib.vt.edu/subjects/maps/
Data Source: http://www.lib.vt.edu/subjects/maps/Renee LoSapio
Urban Affairs and PlanningIn Collaboration with the Center for Geospatial Information Technology
Virginia Tech, 2012
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data Source: http://www.lib.vt.edu/subjects/maps/
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data Source: http://www.lib.vt.edu/subjects/maps/
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Data Source: http://www.lib.vt.edu/subjects/maps/
Improvements
WiFi Signal Survey Map,Created by Quingning Chen, Kelsey Fryling,
Xiaxuan Peng, and Will Kinton Virginia Tech 2012
• Device variation• Use yard/meter pulleys• Weather conditions• Other spatial uncertainties
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
Learn MoreGeosimulation
Renee LoSapioUrban Affairs and Planning
In Collaboration with the Center for Geospatial Information TechnologyVirginia Tech, 2012
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