SATELLITE NEWS GATHERING
Satellite news gathering (SNG) is the usage of mobile communications equipment for the intention of universal news casting. Mobile units are vans contain advanced, two-way audio and video transmitters and receivers by means of dish antennas that can be aimed at geostationary satellites. The initial SNG equipment utilized analog modulation which was similar to typical television and radio. It was first demonstrated in 1982 during the warfare between England and Argentina over the Falkland Islands. Analog SNG was used during the Desert Shield and Desert Storm operations in the Persian Gulf.
In the 1990s, digitalmodulation displaced analog modulation which paved way to the latest technology of digital satellite news gathering (DSNG). A current DSNG van is a stylish affair, competent of deployment anywhere in the cultured world. Signals are reflected between a geostationary satellite and the van, and between the satellite and a control room supervised by a broadcast station or network. In the most highly developed systems, Internet Protocol (IP) is utilized. Broadcast engineers are at present working on designs for distantly controlled, robotic DSNG vehicles that can be teleoperated in aggressive environments such as combat zones, profound space missions, and underwater explorations without risk for the lives of the human operators.