The key difference between an artificial satellite and a real one is that the artificial one can amplify the signals before sending them back, turning it into a powerful communication system.Ĭommunication satellites have some interesting properties that make them attractive for many applications. Navy noticed a kind of permanent weather balloon in the sky - the moon, and built an operational system for ship-to-shore communication by bouncing signals off it.įurther progress in the celestial communication field had to wait until the first communication satellite was launched in 1962. Unfortunately, the received signals were too weak to be of any practical use. In the 1950s and early 1960s people tried to set up communication systems by bouncing signals off metallized weather balloons.
0 Comments
Leave a Reply. |