Localization of GSM Transmitters in an Urban Environment via Unique Multipath Characterizations

Open Access
Phelan, Brian Richard
Graduate Program:
Electrical Engineering
Master of Science
Document Type:
Master Thesis
Date of Defense:
November 07, 2012
Committee Members:
  • Ram Mohan Narayanan, Thesis Advisor
  • Localization
  • Geolocation
  • GSM
  • Multipath
  • Fingerprinting
This thesis proposes a method for determining the location of GSM mobile transmitters. The process discussed here estimates the location of a source without the use of multilateration or LOS techniques. A Multipath Characteristic Database (MCD) containing the multipath signatures for each possible transmitter location in an area of interest is populated via ray-tracing software simulations. The multipath characteristics of interest are Angle of Arrival (AOA), Time of Arrival (TOA), and Received Signal Strength (RSS). By minimizing the `distance' between estimated and simulated multipath feature vectors, an estimate for the actual source location can be obtained. Background and components of the estimation method are presented, then an analysis of the estimation method is given. Since the proposed method utilizes a simulated multipath signature database, the need for a priori soundings from the area of interest is eliminated, thus making this location estimation system ideal for application in hostile territories.