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Localization TechnologyImproving mobile device location
Team 10: Andrew Kotz, Qiaodi Zhuang
Reference: Patwari N. Localization, Cooperative. In: Shekhar S, Xiong H, editors. Encyclopedia of GIS. Salt Lake City , UT: Springer Science & Business Media; 2008. p. 616–22.
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Cooperative Localization
Estimate of a wireless device’s (node) location in a network using measurements made between many pairs of nodes through local optimization.
Used to improve location information
For GPS-less use
GPS won outdoors
Low-energy cost
Low-infrastructure cost
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Apple’s iBeacon
Distributed system
Uses multiple nodes with Bluetooth 4.0
Uses: in-store navigation and personalized push notification
Cost effective: run for up to 2 years on a single included battery
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Apple’s iBeacon
How it works: 1 or more beacons broadcasts unique ID Device determines distance into 3 categories
Immediate – few centimeters Near – couple meters Far – Greater than 10 meters
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Apple’s iBeacon
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Magnetic Positioning
Uses magnetometer and data connection
Applications: Indoor Navigation, Shopping, or Mission Critical
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Magnetic Positioning
How it works Evaluates building’s distortion
of Earth’s magnetic field or “magnetic fingerprint”
Correlates to reference data More steel improves accuracy
(1-2 meters)
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Magnetic Positioning
Step 1: Adding floor plans Step 2: Mapping buildings
Step 3: Creating applications
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Sources
Patwari N. Localization, Cooperative. In: Shekhar S, Xiong H, editors. Encyclopedia of GIS. Salt Lake City , UT: Springer Science & Business Media; 2008. p. 616–22.
Wikipedia. iBeacon [Internet]. 2014 [cited 2014 Nov 11]. Available from: http://en.wikipedia.org/wiki/IBeacon
Barton J (Hewlett P, Kindberg T (Hewlett P. The Cooltown User Experience [Internet]. Palo Alto, CA: Hewlett Packard; 2001. p. 1 – 5. Available from: http://www.hpl.hp.com/techreports/2001/HPL-2001-22.pdf
Sterling, Greg (Opus Research I. | Report. San Fransisco, CA; 2014 p. 1 – 8.
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Class Question
What are some potential downsides to each system?
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Q & A