Terrestrial flight telephone system

Details Terrestrial flight telephone system Terrestrial flight telephone system

1996-10-10

1999-12-07

Ton, Dang

Multiplex communications

Communication over free space

Repeater

455431, 379343, H04B 724

Patent

active

059995203

ABSTRACT:
A terrestrial flight telephone system comprises a number of air stations which communicate on a common frequency with a ground station. The ground station can handle calls from a number of air stations in respective slots of sequential frames defined by the ground station. Accurate synchronisation is critical to the functioning of the system and drift in an oscillator of the air station, which controls the timing of transmissions from the air station, is corrected by signals received from the ground station.

REFERENCES:
patent: 3643259 (1972-02-01), Entner
patent: 4014166 (1977-03-01), Cateora
patent: 4414661 (1983-11-01), Karlstrom
patent: 4602375 (1986-07-01), Inukai
patent: 5212804 (1993-05-01), Choate
patent: 5378155 (1995-01-01), Eldridge
patent: 5438610 (1995-08-01), Bhagat et al.

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