Telecommunications Satellite Communications

Question 1

What does GEO stand for in satellite communications?

Accepted Answer

Geostationary Earth Orbit

Answer

GEO stands for Geostationary Earth Orbit, where satellites orbit at approximately 35,786 km above the equator and remain stationary relative to Earth.

Question 2

At what approximate altitude do geostationary (GEO) satellites orbit Earth?

Accepted Answer

35,786 km

Answer

GEO satellites orbit at approximately 35,786 km above Earth's equator, which produces an orbital period of exactly 24 hours, matching Earth's rotation.

Question 3

Which satellite orbit provides the lowest signal latency for communications?

Accepted Answer

LEO (Low Earth Orbit)

Answer

LEO satellites at 500–2,000 km altitude provide the lowest latency (~20–40 ms) because signals travel much shorter distances compared to MEO or GEO.

Question 4

The C-band frequency range used in satellite communications covers approximately:

Accepted Answer

4–8 GHz

Answer

C-band covers approximately 4–8 GHz and is widely used for satellite communications due to its resistance to rain fade and long-established infrastructure.

Question 5

What is the primary advantage of Ku-band over C-band for satellite communications?

Accepted Answer

Smaller receive antenna size required

Answer

Ku-band's higher frequency (12–18 GHz) produces shorter wavelengths, allowing smaller dish antennas, which makes it practical for consumer satellite TV services like DirecTV.

Telecommunications Practice Test

Telecommunications Practice Test

Telecommunications Satellite Communications