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Questions tagged [communication-satellite]

Questions about satellites designed to aid in communications, such as phone, TV and Internet satellites.

5
votes
3answers
1k views

How are geosynchronous satellites launched to such an incredible height?

Most satellites are launched to a mere fraction of the altitude at which geosynchronous satellites orbit. How are geosynchronous satellites carried so high? Do they store a lot of propellant on ...
3
votes
2answers
372 views

Elevation Angle from Earth Station antenna to Mars

I want to calculate the Elevation angle between Earth and Mars .I have the Mars and Earth exact position in space ,but need the elevation Angle from a specific Earth Station antenna ( e.g. canberra ...
13
votes
1answer
726 views

Can communication satellites be used in lunar orbit?

Because the moon always has the same orientation to earth, if we want to have communications with manned or robotic explorers on the far side some type of relay would be needed for communication. ...
11
votes
1answer
2k views

Are Molniya orbits used apart from Russian communication satellites?

Molniya orbits are popular with Russian communication satellites, because they spend a lot of time at high latitudes. Europe and Canada are also quite far north. Do any European, American, or ...