Need Of Satellite Communication In Modern World

Satellites send television signals directly to homes they send the signals from a central station that generates programming to smaller stations that send the signals locally via the cables or the airwaves the news broadcasts are sent from the field to the studio via the satellite.

Need of satellite communication in modern world. Satellites are increasingly important to the developing world. For a country like india with populations separated by rough terrain and different languages communications satellites provides remote populations access to education and to medical expertise that would otherwise not reach them. On 4 october 1957 the soviet union launched the world s first artificial satellite sputnik 1 since then about 8 900 satellites from more than 40 countries have been launched. It creates a communication channel between a source transmitter and a receiver at different locations on earth communications satellites are used for television telephone radio internet and military applications.

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder. A typical satellite link involves the transmission or uplinking of a signal from an earth station to a satellite. In the context of spaceflight a satellite is an object that has been intentionally placed into orbit these objects are called artificial satellites to distinguish them from natural satellites such as earth s moon. There are about 2 000 communications satellites.