Definition
satellite news gathering (SNG)
Satellite news gathering (SNG) is the use of mobile communications equipment for the purpose of
worldwide newscasting. Mobile units are usually vans equipped with advanced, two-way audio and
video transmitters and receivers, using
dish
antennas that can be aimed at
geostationary
satellites.
The earliest SNG equipment used
analog
modulation
,
similar to conventional television and radio. The technology first demonstrated its capability
during the war between England and Argentina over the Falkland Islands in 1982. Analog SNG was used
extensively during the Desert Shield and Desert Storm operations in the Persian Gulf. During the
1990s,
digital
modulation
supplanted analog modulation, giving rise to the newer technology of digital satellite news
gathering (DSNG).
A modern DSNG van is a sophisticated affair, capable of deployment practically anywhere in the
civilized world. Signals are beamed between a geostationary satellite and the van, and between the
satellite and a control room run by a broadcast station or network. In the most advanced systems,
Internet Protocol (IP) is used. Broadcast engineers are currently working on designs for remotely
controlled,
robotic
DSNG vehicles that can be teleoperated in hostile environments such as battle zones, deep space
missions, and undersea explorations without endangering the lives of human operators.
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