How the satellite is sent?

There is a separate space to set up satellites in orbit. It is called "Launch Vehicle". The most important issue in setting up satellites in orbit is to protect the equation of gravity acceleration and the speed of the space. Because the gravity acceleration continues to drag our launch machine to the world.

There are two types of launchers - waste rockets and space shuttle. The wasteful rockets are destroyed after the satellite installation. On the other hand, space shuttle can be used repeatedly to set up satellites. The speed of the launch machine depends a lot on the height. The low Earth orbit = LEO's speed is 7.8 km / second, the geostationary Earth orbit = GEO is 3.1 km / s.

Satellit types

Based on the orbit, the satellite system can be divided into several groups.

LEO (Low Earth Orbit) - 160-2,000 km from the surface of the Earth Located above Generally, the observation of satellites in the Earth is in this orbit. Because the Earth is very close to the surface, these orbital satellites can observe the Earth very well. International Space Station located in this orbit.

MEO (Medium Earth Orbit) - 20000 km from Earth's surface Located above Generally, GPS satellites are in this orbit. The speed of these orbital satellites is slow. Many satellites are required to send these satellites.

GEO (Geostationary Earth Orbit) - GEO 36,000 km from Earth's surface Located above Antenna's position in this orbit is fixed. Generally used in the transmission of radio and TV.