Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1994-03-11
1997-03-04
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
342457, G01S 124, G01S 302
Patent
active
056084102
ABSTRACT:
A system for determining the location of a mobile transmitter is disclosed. The mobile transmitter receives a message signal and responds to the message signal by transmitting a responsive signal, wherein the responsive signal is indicative of the identity of the mobile transmitter. One preferred embodiment comprises at least three antenna site systems 10, a central site system 12, a database processor for use in connection with various applications, and a map system 16. The system may be employed to locate cellular telephones and/or like devices emitting bursty transmissions, e.g., over messaging or control channels.
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Knight Curtis A.
Stilp Louis A.
Webber John C.
Associated RT, Inc.
Issing Gregory C.
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