what is communication satellites? why it is called geostationary
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Answer:
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A communications satellite is an artificial satellite that relays and amplifies radio ... The concept of the geostationary communications satellite was first proposed by Arthur C. Clarke ,
=> This is because it revolves around the Earth at Earth's own angular velocity (one revolution per sidereal day, in an equatorial orbit). A geostationary orbit is useful for communications because ground antennas can be aimed at the satellite without their having to track the satellite's motion.
Answer:
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. The term geostationary comes from the fact that such a satellite appears nearly stationary in the sky as seen by a ground-based observer. BGAN, the new global mobile communications network, uses geostationary satellites.
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