Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-05-02
2006-05-02
Appiah, Charles N (Department: 2686)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C342S386000, C701S207000
Reexamination Certificate
active
07039421
ABSTRACT:
A system for determining the position of an object, comprising a reference transmitter device (202) disposed in a fixed position, the reference transmitter device (202) having a reference time supplying means for supplying a reference time signal that indicates a reference time, at least two transmitter/receiver devices (302) disposed in fixed positions with respect to each other and to the reference transmitter device (202), each transmitter/receiver device (302) having a time supplying means for supplying a time signal indicating a time, a receiver means for receiving the reference time signal from the reference transmitter device (202) and a synchronization means for processing the time signal and the reference time signal, as well as a position determining device (502) on the object for determining the position of the object.
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Manfred Bohm et al., “Funksysteme fur Ortung und Navigation”, Verlag Berliner Union GmbH Stuttgart, 1973, pp. 27, 92-104, no month listed.
Bretz Ingmar
Couronne Sylvie
Gerhaeuser Heinz
Koehler Stefan
Rohmer Guenter
Appiah Charles N
Dougherty & Clements
Fraunhofer-Gesellschaft zur Förderung der angewandten Forsc
Ly Nghi H.
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