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Topic : Satellite connection
Task 1: Read the text and answer the following questions
1.What is satellite communication ?
2.Where satellite communication is used ?
3.Count the basic components of a satellite communication system.
4.Count the process of satellite communication steps.
5.Do you know another advantage and disadvantage of satellite communication.
Satellite communication
Satellite communication is a method of communication that uses satellites to provide communication links between various devices on Earth. This method of communication is widely used in many applications such as television broadcasting, internet services, and military communication.
The basic components of a satellite communication system are:
Ground station: This is the terrestrial station that sends and receives signals to and from the satellite. It consists of antennas, transmitters, and receivers.
Satellite: A satellite is a device that orbits the Earth and relays signals between ground stations. Satellites can be classified into different types based on their orbits, such as geostationary, low earth orbit, and medium earth orbit satellites.
Transponder: A transponder is a device on a satellite that receives a signal from a ground station, amplifies it, and retransmits it back to the Earth.
The process of satellite communication involves the following steps:
Up-linking: This is the process of transmitting a signal from a ground station to a satellite. The signal is transmitted using a radio frequency and is received by a transponder on the satellite.
Transponder operation: The transponder receives the signal from the ground station, amplifies it, and retransmits it back to the Earth.
Down-linking: This is the process of receiving the signal transmitted by the satellite. The signal is received by another ground station, which processes the signal and delivers it to the intended recipient.
Some of the advantages of satellite communication include the ability to provide communication links to remote and inaccessible locations, the ability to provide global coverage, and the ability to provide high-speed data transmission.
However, there are also some disadvantages to satellite communication, such as the high cost of building and launching a satellite, the potential for signal interference, and the potential for signal delays due to the distance that the signal must travel.
Overall, satellite communication is an important method of communication that has many applications in various fields. It is a complex and highly technical field, and there are many factors that must be considered when designing and implementing a satellite communication system.
Task 2:Read the above text and match the words in column A with their definitions in B , write translation in the table:
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A
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B
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Translation
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1
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Transponder
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a)
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This is the process of transmitting a signal from a ground station to a satellite. The signal is transmitted using a radio frequency and is received by a transponder on the satellite.
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2
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Up-linking
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b)
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The transponder receives the signal from the ground station, amplifies it, and retransmits it back to the Earth.
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3
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Satellite
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c)
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This is the terrestrial station that sends and receives signals to and from the satellite. It consists of antennas, transmitters, and receivers
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4
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Ground station
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d)
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A device that orbits the Earth and relays signals between ground stations. They can be classified into different types based on their orbits, such as geostationary, low earth orbit, and medium earth orbit satellites.
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5
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Down-linking
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e)
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A device on a satellite that receives a signal from a ground station, amplifies it, and retransmits it back to the Earth.
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6
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Transponder operation
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f)
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This is the process of receiving the signal transmitted by the satellite. The signal is received by another ground station, which processes the signal and delivers it to the intended recipient.
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Task 3: Look at the picture and write sentences about how does satellite internet work ?
Task 4: Read the following text and answer the question.
1.Where is satellite internet used ?
2.Satellite internet is used as an alternative to what ?
3.Count satellite internet connection provider ways.
4.How satellite internet works ? And explain this.
5.Count the benefits of satellite internet.
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