Aircraft data communication employing existing voice channels

Details Aircraft data communication employing existing voice channels Aircraft data communication employing existing voice channels

1993-10-04

1995-09-05

Urban, Edward F.

Telecommunications

Transmitter

Amplitude modulation

455 46, 455 47, 4551561, H03C 152

Patent

active

054487684

ABSTRACT:
A system for communicating data between an aircraft and ground unit over conventional amplitude modulated (AM) voice radio channels employs a data collection unit for collecting data desired to be transmitted, such as global positioning system (GPS) data, altitude, or aircraft identification information which is encoded by a data encoder. A gating means senses when the microphone of the AM transmitter is keyed, and passes the encoded data and the voice signals to the existing AM modulator of the AM voice transceiver. This results in a transmitted signal received by a receiving unit, such as a ground unit, which separates the received signal into an AM modulated voice signal and a AM data signal. The AM voice signal is demodulated by normal means into an audible signal, with the AM data signal being decoded by a data decoder into data. This data may be used to identify the aircraft symbol on a radar screen, identify the voice signal with a aircraft identification number, or flight number thereby reducing the amount of identification required. In alternative embodiments, avionics equipment may be added to the aircraft responsive to the data being sent from the ground unit, allowing collision avoidance capabilities.

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patent: 3668403 (1972-06-01), Meilander
patent: 3697997 (1972-10-01), Cooper
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patent: 5023934 (1991-06-01), Wheelless
patent: 5073779 (1991-12-01), Skogmo et al.
patent: 5124979 (1992-06-01), Matui
patent: 5153836 (1992-10-01), Fraughton et al.
patent: 5220681 (1993-06-01), Belgin
patent: 5262784 (1993-11-01), Drobnicki et al.

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