ATIS Telecom Glossary
Monday, October 20, 2014

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LEO
Abbreviation for low Earth orbit. A term used to describe the orbital altitude range (500 to 2000 km above the surface of the Earth) of certain communications satellites.Note 1: Generally, LEO satellites are part of constellations of satellites that achieve wide coverage of the Earth's surface with lower power requirements and shorter propagation delays than can be achieved with, e.g. Geostationary orbit satellites, or MEO satellites. Note 2: LEO satellites may have equatorial or polar paths. Note 3: Two LEO groups have emerged: Little LEO for data-communications satellites and Big LEO for data-and-voice communications, each using preassigned frequency ranges.

LEO image

 

Classification Orbital Altitude (km above the Earth)
LEO 500-2,000
MEO 8,000-20,000
Geostationary orbit 35,786

 

 

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
For more information on the work related to these definitions,
please visit the ATIS website and the ATIS Document Center