1. Sri Naga Jahnavi Yeddanapudy
LAWS : Location Accuracy based on Wireless Signals Master Project Proposal
Sri Naga Jahnavi Yeddanapudy
4/9/2019

2. Outline Introduction Problem Statement Background Related Work
Evaluation
Conclusion
Time Line
LAWS: Location Accuracy Based on Wireless Signals
4/9/2019

3. introduction Need For Location Accuracy Better Mobile Applications
Disaster/Security, e.g. E-911
Better Direction
Geo-Fencing
Better Mobile Applications
Google map with accurate position display..
4/9/2019
LAWS: Location Accuracy based on Wireless Signals

4. Problem Statement
Determine Location accuracy based on Wi- Fi and GPS signals.
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

5. Background The GPS location of Wireless access point (AP)
GPS information – Latitude , Longitude, Altitude.
Its inaccuracy comes from blocking of signals from GPS satellites, e.g. indoor problem.
Wifi derived location information
The GPS location of Wireless access point (AP)
BSSID can be used to identify uniquely the signal of an AP.
By correlating the strength of three AP signal we can estimate the location of a wifi receiver.
The inaccuracy comes from signal to noise ratio, shielding effect
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

6. Related Work
<put two papers on improving location accuracy based on wireless signals>
Analyze spoofing attacks on single and multiple receivers in civilian and military GPS systems [ref1yr].
Development of a Portable GPS Civilian Spoofer
Android Application to alert driver in school zone if over speeding.
IT Forensic analysis based on IP Geo location information.
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

7. METRICs for Evaluation
Accuracy
Time Performance
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

8. Goal of the PROJeCT
Conduct experiments to evaluate location accuracy based on Wi-Fi signals and GPS signals.
Our experiments focus on outdoor such UCCS Alpine Soccer Field or Alpine parking garage or central court or older Engineering building because we have better shielding effect on the wall door.
Develop an Android Application for collecting Wi-Fi base station information., signal strength, device GPS Signals and reported location.
Develop and algorithm to calculate android phone location based in the Wi-Fi signal strength.
Based on the availability of the base station data, compare the android phone signal strength with those observed by the base station.
LAWS
4/9/2019

9. Time Line LAWS: Location Accuracy based on Wireless Signals Task
Task Description
Length
Status 1
Literature Survey
6 weeks
Completed 2
Develop Android Application for collecting
Wi-Fi signal Information
2 weeks
Yet to be done 3
Develop Android Application for collecting GPS Signal information 4
Algorithm to calculate location based on Wi-Fi signal strength
4 weeks 5
Evaluate location accuracy 6
Write Project Report
1 week
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

10. Deliverables
Android Application for Location accuracy based on Wi-Fi and GPS signals.
A Project report documenting the software prototype LAWS.
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

11. References LAWS: Location Accuracy based on Wireless Signals 4/9/2019
Nils Ole Tippenhauer, Christina Popper, Kasper B. Rasmussen, Srdjan Capkun, “On the Requirements for Successful GPS Spoofing Attacks”, CCS '11 Proceedings of the 18th ACM conference on Computer and communications security, Pages 75-86, October
Todd E. Humphreys, Brent M. Ledvina, Mark L. Psiaki, Brady W. O'Hanlon, and Paul M. Kintner, Jr., “Assessing the Spoofing Threat: Development of a Portable GPS Civilian Spoofer”, ION GNSS Conference Savanna, GA, September 16–19, 2008.
John Whipple, William Arensman, Marian Starr Boler, “A Public Safety Application of GPS-Enabled Smartphones and the Android Operating System”, Proceedings of the 2009 IEEE International Conference on Systems, Man, and Cybernetics, Pages , October
Robert Koch, Mario Golling, Lars Stiemert, and Gabi Dreo Rodosek, “Using Geolocation for the Strategic Preincident Preparation of an IT Forensics Analysis”, Systems Journal, IEEE, Pages 1-12, February
LAWS: Location Accuracy based on Wireless Signals
4/9/2019

12. Q & A
LAWS: Location Accuracy based on Wireless Signals
4/9/2019