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Satellite Communication Orbits

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Questions and Answers

What is the main advantage of GEO orbit for broadcasting TV?

Large covered area (correct)

Better frequency reuse

Short delay

Less free-space attenuation

What is the maximum satellite visible time for LEO satellites?

10 minutes

2 hours

20 minutes (correct)

1 hour

What is the primary advantage of LEO satellites in terms of signal strength?

Stronger signal strength due to higher orbit

No difference in signal strength compared to GEO satellites

Better signal strength due to lower transmit power (correct)

Weaker signal strength due to lower orbit

What is the approximate diameter of coverage for LEO satellites?

8000 km Signup and view all the answers

What is the main disadvantage of GEO satellites in terms of delay?

Long delay due to high orbit Signup and view all the answers

What is the minimum number of satellites required for global coverage using LEO satellites?

32 satellites Signup and view all the answers

What is the distance of a Geostationary satellite's orbit from the earth's surface?

35,786 km Signup and view all the answers

What is the advantage of Geostationary satellites in terms of tracking?

Tracking of the satellite is simplified Signup and view all the answers

What is the approximate one-way propagation delay for Geostationary satellites?

250-280 ms Signup and view all the answers

What is the main reason why Geostationary satellites are not suitable for global coverage for small mobile phones and data transmission?

They have a high propagation delay Signup and view all the answers

What is the primary application of Geostationary satellites?

Weather forecast and global communications Signup and view all the answers

How many satellites are required for global coverage using Geostationary satellites?

3-4 satellites Signup and view all the answers

What is the primary reason a satellite stays in orbit?

The balance between its momentum and Earth's gravity Signup and view all the answers

What is the purpose of a rocket in launching a satellite?

To overcome Earth's gravity and reach orbit Signup and view all the answers

What happens when a satellite is too close to Earth?

It travels faster to stay in orbit Signup and view all the answers

What are the two main forces acting on a satellite's motion?

Centripetal force and gravitational force of attraction Signup and view all the answers

Why do satellites need to reach high speeds to stay in orbit?

To overcome Earth's gravity Signup and view all the answers

What is the term for the energy a satellite gains from the rocket?

Momentum Signup and view all the answers