GLOSSARY

perigee

 

the closest point to the earth

apogee

 

The farthest point from the earth

uplink

 

transmission from the earth station to the satellite

down link

 

transmission from the satellite to the earth station.

latitude

 

The distance of a place north or south of the equator

 

 

 

 

 

 

 

 

 

ultrasonics by mrs.r.selvapriya