airports
which the TETRA network and its wireless applications are becoming increasingly closely integrated. With its IP-based architecture, the Motorola Dimetra IP radio technology fits naturally into this digital environment. At present, some 1900 TETRA radios are in use across the airport, alongside a fixed communications system with nearly 13 000 telephones connected and a local area network with more than 12 000 active LAN ports, including PCs and workstations. Trough these systems, the IT department serves more than 500 customers at the airport. Among them are airlines, ground handlers and public authorities such as the police and border guards. At the same time, the network supports airport services such as the flight information display screens in the passenger terminals. “We are also operating some other systems that are not
typical of IT”, says Michael Zaddach, head of the department. “Tere’s a multilateration system to locate the aircraft here on the ground with a transponder signal from the aircraft and with fixed antennas on the ground – so we can do an exact location of every aircraft and identification of the aircraft because the transponders send a unique identifier. It’s something new. Tere are some airports in Europe that have already introduced this technique, but not all. “We have also location services on the ground to locate
all the vehicles. Tere are more than 800 vehicles on the system. It gives us a help to have an efficient process to dispatch all these vehicles on the ground. And we have a huge wireless LAN infrastructure with more than 350 access points in the terminals and also in the outside areas.”
At the core of the department’s operations are 50–60
software applications, ranging from enterprise resource planning for the administrative offices to numerous specialized applications connected with airport process management. Many of these have been developed within the department itself. One very large project it managed and executed recently was a migration of the airport’s CCTV systems from analogue to digital. Some 1800 cameras were involved.
Switching to TETRA Migrating the airport’s private mobile radio installation to digital was an earlier project which began five years ago. Te previous network, an analogue trunked system by AEG, had been in operation since the opening of the airport, but support was no longer obtainable from the manufacturer and replacement parts were becoming impossible to find. “We had more and more problems with the old system”, says Michael Zaddach. “Tat was very critical for us, because the operation depends on smooth operation of the radio system. “Another point was that the old terminal devices were
very big and heavy, and the users were always comparing the old devices with new mobile telephone devices. Tey couldn’t understand why they needed such a big device!” But compact, pocket-sized terminals were not the only
advantages of the TETRA system. It also brought advanced functions and communications features such as dynamic talkgroups, secure speech over the air and better voice quality, especially for users out and about on the apron. “If you are talking via TETRA near a running aircraft, the communication now is much better than before”, Zaddach explains. “Te noise is suppressed.” Also available on the radio network is a telephone
“Our mission here is to be the service provider in IT and in telecommunication technology at Munich Airport”, says Michael Zaddach, senior vice president for IT at the airport’s operating company, FMG. “We have a huge range of services from plan-and-build to running the services here. All solutions are proved in daily airport operations”
Issue 1 November 2010 - February 2011 TE TRA TODAY
interconnect function with full two-way speech, enabling users to make and receive calls via the public telephone network. In addition, there is now the possibility for mobile and
portable radios to send and receive data, and some of the department’s customers on the airport are already using this. Opportunities exist, too, to benefit by integrating the TETRA system with the airport’s IT applications.
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In the traffic office is Peter Waltner, of airside management. His department has been using the TETRA radios for three years, a replacement for the airport’s earlier analogue radio system. “It often failed”, he recalls. “The system was often overloaded – too crowded, too many calls – and then the system broke down”
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