System for locating a source of bursty transmissions cross reference to related applications
US5608410A · kind A · utility
225Cited by
79References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1994 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Mar 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.