Satellite Communications Test 2

Rotation of a geosynchronous satellite means its

• drift from stationary position

• wobbling

• three-axis stabilization

• three-dimensional stabilization

A transponder is a satellite equipment which

• receives a signal from Earth station and amplifies

• changes the frequency of the received signal

• retransmits the received signal

• does all of the above-mentioned functions

A geosynchronous satellite

• has the same period a that of the Earth

• has a circular orbit

• rotates in the equatorial plane

• has all of the above

The quality of a space-link is measured in terms of the __________ ratio.

• C/N

• S/N

• G/T

• EIRP

What are the types of satellites?

• artificial & homemade

• natural & organic

• natural & artificial

What do natural and artificial satellites have in common?

• the don't have anything in common

• they orbit celestial bodies

• they send information to the Earth

• the float outer space with no direction

Why are VHF, UHF, and microwave signals used in satellite communication?

• more bandwidth

• more spectrum space

• are not diffracted by the ionosphere

• Economically viable

What is the distance from earth of Low Earch Orbit (LEO) satellites?

• 500-1500km

• 5000-12500km

• 35800km

Which of the followings are able to transmit TV/Radio broadcast?

• Satellite

• Radio waves

• Cables

• Bluetooth

A satellite that travels in an orbit that exactly matches the Earth's rotation is traveling in a(n)

• low Earth orbit (LEO).
• low stationary orbit (LSO).
• geostationary orbit (GEO).
• high Earth orbit (HEO).