By Alex Wright and Terrence Bunkley Mentored by Dr. Kamesh Namaduri College of Engineering Department of Computer Science and Engineering Department of Electrical Engineering

 Background  Purpose  Hypothesis

 What got us interested?  Why not use GPS?  What are the possible wireless localization methods?

 The purpose of this project is to determine the location of autonomous robots using the wireless signals ( n).  We believe that the locations of the robots can be determined best using the Fingerprinting Method

 Materials  Methodology  Problems

 4 Autonomously controlled Garcia robots  Red, Blue, White, and Orange  2 Computers  Linux, Windows XP  Wireless AP’s at UNT Discovery Park  n

 Create a Grid-based layout  Take 10 scans of the RSSI signal  Repeat for every point mapped

 Time consuming  Fluctuating wireless signals  Not as accurate as expected

 Results  Conclusion  Questions

 We were able to locate the robots through WiFi signals using the Fingerprint method.  We were able to develop heat maps showing the areas where signal strength is greatest.  Created programming algorithm that allows the robots to autonomously navigate to a single relative location.

 Algorithm analyzes RSSI data sent from robot and compute s point

 Second floor lobby the west side of Discovery Park

 Embedded Systems Lab

 The location of devices are able to be located using wireless signals.  An open area would be ideal because objects absorb the signals.  A consistent transmit power should be used to improve accuracy.