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Digital
Audio Radio Broadcast Satellite Earth Station for Fraunhofer
Institute, Innovationszentrum, IZT, Erlangen, Germany
(Project Completed April 1999)
System integration, installation & commissioning
of X' Band Satellite Earth Station for digital
audio radio broadcast service (DARS) using Afristar
satellite.
Project
included 4.5 meter C band Cassagrain Andrew antenna
with modified X band transmit / L band receive feed
from Seavey, Inc. and step track tracking system from
SPL, UK, Globecomm Systems supplied RF system, 50 watt
Solid State Power amplifiers & Up Converter, LNA,
associated RF equipment and Monitor & Control Systems.
Baseband equipment is supplied by Fraunhofer Institute,
IZT, Erlangen, Germany.
The Fraunhofer Baseband system is one of the key components
in the DARS broadcast station. It performs all of the
necessary processing of service components generated
by a broadcaster for uplink transmission in the digital
network.
These services can be analog or digital audio as well
as data services. The baseband system processes the
service component according to the digital format :
MPEG 2.5 layer-3 audio encoding, broadcast channel multiplexing,
demultiplexing and modulation onto the carriers which
are then transmitted to the satellite.
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