COMMON CHARACTERISTICS OF SATCOM REQUIREMENTS
By Editor | July 1, 2009
Customers do not differentiate between the types of communications services they need by dividing them between high capacity and low capacity, military or commercial. He is concerned with doing business and having the communications resources he or she needs when they need them in order to accomplish the task at hand. To ensure that the customer will have the right information at their disposal, a common set of system characteristics are needed to support business operations.
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Why Use Satellites For Communications?
By Editor | June 22, 2009
1) Economical Long Distance Communications- The cost of transmitting information between two users via satellite is essentially the same despite the distance.
2) Broadcast Capability- Satellites can be used as broadcast transmitters relaying signals from one transmitting earth station to multiple receiving stations within the coverage area.
3) Wideband Capability- Satellites are usually wideband devices that can transmit large amounts of information within a given amount of time.
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What Does a Satellite Do?
By Editor | May 30, 2009
Most communications satellites carry active microwave repeaters, or transponders. The satellite receives signals from an earth transmitter, amplifies them, translates them to another frequency, and then retransmits the signals back down to one or more earth stations.
The signal transmitted by a ground terminal is degraded by the signal’s long distance path through the atmosphere on its way up to the satellite. Amplification onboard the satellite ensures that the received signal is restored so an accurate signal with sufficient strength will be relayed back down to the earth. The signal returning to earth will lose a lot of signal strength.
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Satellites Today in Business
By Editor | May 18, 2009
Virtually everyone in the world today, either directly or indirectly, uses satellites. They so extensively embed satellites in today’s global technology culture that it is difficult to find someone not affected. However, the impact of satellites is not intuitively obvious to the average person.
Why?
For one thing, satellites are not visible. A person making a phone call does not think about the path his call takes to get to the distant end, nor does he particularly care as long as the call gets through.
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Space and Satellite Environment
By Editor | May 8, 2009
Space is an unlimited three-dimensional medium. Space is the military “high ground.” Historically, whoever held and used the high ground had a significant advantage over his adversaries. The use of space offers the any business enhanced capabilities on the battlefield of business and provides communications, position/navigation data, early warning, weather, environmental monitoring, surveillance, and targeting capabilities. Businesses today are using space products, sometimes without even being aware of it. The effective use of space systems and products is critical to successful business global operations.
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