November 17, 2008
ESA Exhibition Videoclip ““ Telecommunications
Many everyday actions that we take for granted happen because telecommunication satellites are in orbit, 36 000 km over our heads – they are reliable and can be used in a plethora of ways, including internet access via satellite, tele-education, tele-medicine or video conference systems. There are many types of telecommunication satellites and they vary in design according to their purpose. They use different orbits; different frequencies and they transmit very different type of signals using a variety of power levels.