|Satellite Height||500-1500 km||5000-12000 km||35,800 km|
|Orbital Period||10-40 minutes||2-8 hours||24 hours|
|Number of Satellites||40-80||8-20||3|
|Number of Handoffs||High||Low||Least(none)|
|Gateway Cost||Very Expensive||Expensive||Cheap|
- HEO refers to highly elliptical orbits which have a visibility of about 12 hours.
- ICO or intermediate circular orbit is an example of MEO.
- GPS satellites are not in Geostationary orbits but instead, they orbit twice for every rotation of the earth at a height of 20, 000 km.
- Handheld terminals have low sending power are hence use LEO for mobile communication. LEO are also closest to the earth, have better signal strength and less time delay