CNS
Systems, Inc. is dedicated to providing communication, navigation and surveillance
solutions for the commercial and military transportation industries.
The
CNS Ground Station
For more information, e-mail us at
info@cnssys.com.
Components
of a CNS Ground Station: The CNS ground station
is the heart of an air-ground data communications system. It is much more
than a data radio because it manages the interface between the air-ground
data links and the ground based applications. Traditional ACARS systems
carry Air Operational Control (AOC) messages between airline host computers
and commercial aircraft. Future systems will support a wider variety of
communications including GPS and radar target position reports, Air Traffic
Control (ATC) messages, and Differential GPS corrections.
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Computer
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Data routing and protocol conversion
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Upper-layer protocol implementation
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Remote management and alarms,
logging
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Radios
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May include any or all data
link technologies
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Ground Interfaces
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WANs - anything from SLC (ARINC,
SITA) to Internet
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LANs - exchange information
with the Tower, dispatch, and other airport systems
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Special - AMASS/ASDE-3, SSR,
ground vehicle tracking, Differential GPS ground station ...
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Options
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UPS, redundancy, hot-standby,
cold-standby, spares ...
Example:
A Proposed Stand-alone ACARS System
In this example a few VHF
data communications sites are strategically placed in a country to provide
the coverage and redundancy desired. Each data communications site has
one or more data link transceivers providing the physical and channel access
protocol layers and a CNS Ground Station computer providing the link and
networking protocols. These sites are linked to a central hub which provides
system services and links to the end users.
Note that this system could
easily support any of the data link technologies indivifually or simultaneously.
This provides a transition capability for ACARS aircraft.
Example:
Single Mode Block Diagram
An uninterruptable power supply with
backup generator capable of powering the site as required to meet site
availability goals will also be required.
Example:
Dual Mode Block Diagram
ACARS
and STDMA data links
This page last updated on February 7, 1998
Copyright © 1996, 1997, 1998 CNS Systems, Inc.