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Microwave system for the detection and localization of mobile phones in large buildings

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3 Author(s)
Hudec, P. ; Dept. of Electromagn. Field, Czech Tech. Univ. Prague, Czech Republic ; Polivka, Milan ; Pechac, P.

A novel monitoring system for the detection and localization of mobile (cellular) phones in large buildings based on a matrix of microwave sensors has been designed and practically employed. The system enables detection of all active mobile services and ensures very high immunity against all other radio signals. The designed antennas, system structure, and signal processing provide high probability of correct localization of the transmitting mobile phone. Thus far, microwave detection systems with several thousands of sensors have been installed and successfully operated in several prisons in the Czech Republic. The system has been found to be an efficient tool for improving security in highly guarded areas.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:53 ,  Issue: 6 )