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What is the difference between GEO, MEO, and LEO satellites?

+2 votes
33,391 views
posted May 31, 2014 by Vikram Singh

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3 Answers

+2 votes

LEO os called Low earth orbit, MEO is called Medium Earth Orbit and GEO is called Geostationary orbit. LEO are about 500 Km to 1500 Km above the earth, so the delay is very small and the losses is small too. MEO are installed at 5000 to 12000 km above the earth and generally used for navigation communications like GPS. GEO is about 35800 Km above the equator, the delay and losses are greater, but the advantages is more coverage (it covers 40% of the earth) and there no need to track the satellite, so the earth terminal is cheaper.

See the following figure which describes them nicely

LEO/MEO/GEO

answer May 31, 2014 by Chahat Sharma
+1 vote

I would like to add few additional information as follows:
1. Since LEO satellite is nearer to planet compare to MEO and GEO, it has small cell (or foot print).
2. Due to small cell coverage, more number of LEO satellite need to install to cover the planet(for instance earth).
3. LEO moves very fast compare to MEO, so very frequent hand-off is required between two LEO satellites to avoid interrupt for ongoing calls between two users.
4. GPS satellite uses medium earth orbit.
5. Satellites which use geostationary orbit known as GEO. GEO satellite rotates with speed as earth and take 365 days to complete one rotation.

answer May 31, 2014 by Vimal Kumar Mishra
Great info.. Thanks
>>>>> 5. Satellites which use geostationary orbit known as GEO. GEO satellite rotates with speed as earth and take 365 days to complete one rotation. <<<< i think you mean 24 hours
0 votes

Satellites in Low Earth Orbit are within 1000 miles of the surface, and routinely go around about 18 times every day.
Satellites in Mid Earth Orbit are up around 6000 to 20,000 miles, and orbit generally twice per day (some are more).
Satellites in geosynchronous orbit are placed there so they remain fixed over the Earth's surface, and go around exactly once per day.

answer Apr 12, 2016 by Joeswinn
nice sir
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