Accession Number : ADA301710

Title :   Tracking Cellular Phones with UAV's.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Fallon, Michael P.

PDF Url : ADA301710

Report Date : JUN 1995

Pagination or Media Count : 139

Abstract : The use of cellular phones has become widespread. It is predicted that cellular phone use will soon become almost as high as normal land-line telephones. The ability to track these phones has obvious advantages for intelligence gathering. The problem with tracking these phones is that their use is intermittent and they are very low power emitters. The use of Unmanned Aerial Vehicles (UAV's) could help in the detection of these signals. They would extend the capabilities of a ground unit. Once these signals have been detected, the best algorithm for tracking to the intermittent and noisy nature of the received signals. The extended Kalman filter is used because of the nonlinearities present in the system. The exploitation of cellular signals by using UAV's and the extended Kalman filter is an important framework for future use of UAV's in unconventional ways. This thesis explores the use of UAV's to exploit' cellular emissions and locate the caller. The time difference of arrival (TDOA) of emissions is the main method of tracking using the Kalman filter. Further research and directions of interest will be proposed.

Descriptors :   *TELECOMMUNICATIONS, *TELEPHONE SYSTEMS, *REMOTELY PILOTED VEHICLES, *VOICE COMMUNICATIONS, ALGORITHMS, LOW POWER, GROUND LEVEL, EMISSION, POSITION(LOCATION), DETECTION, AIRCRAFT, CELLS, INTERCEPTION, ANGLE OF ARRIVAL, KALMAN FILTERING, TRACKING, THESES, TIME, SIGNALS, COORDINATES, UNMANNED, CONVERGENCE, ARRIVAL, EMITTERS, SURVEILLANCE, TRANSMITTER RECEIVERS, ORTHOGONALITY, LAND AREAS, ELLIPSES, OMNIDIRECTIONAL ANTENNAS, COMMUNICATIONS INTELLIGENCE, TELEPHONE TRANSMITTERS.

Subject Categories : Pilotless Aircraft
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE