Basic Overview Of Satellite Communication

Satellite Communication

The unique characteristic of satellite communication is their mightiness to simultaneously link all users on the earth’s surface. Satellite Provide insensitive point-to-multipoint communications. The capability applies to fixed terminals on earth.
And to mobile terminals on land, inward the air, as well as at sea. Satellites offering a position out of features non readily available amongst other agency of communications.

As large areas of the Earth are visible from satellite, the satellite tin dismiss degree the offset betoken of the communications network as well as tin dismiss simultaneously link geographically separated users.
Satellite communications organization is economical solely where the organization is inward continuous use. Thus costs tin dismiss endure reasonably spread over a large number
of users. Satellites degree an essential business office of telecommunication every bit

• Carrying large amounts of information as well as telephone traffic
• Television signals
• Remote sensing every bit detection of H2O pollution
• Monitoring as well as reporting weather condition conditions.
• Search as well as rescue operations.

Frequency allocations for satellite services

Allocating frequencies to satellite services is carried out nether the auspices of the International Telecommunication Union (ITU). To facilitate the frequency planning, the public is divided into iii regions:

1. Region 1: Europe, Africa, formerly the Soviet Union as well as Mongolia
2. Region 2: North as well as South America as well as Greenland
3. Region 3: Asia(excluding percentage 1 areas), Commonwealth of Australia as well as the south-west Pacific.

Within these regions, frequency bands are allocated to diverse satellite services. Although a given service may endure allocated dissimilar freq band inward dissimilar regions.

Satellite services

• Fixed satellite services (FSS): links telephone N/Ws as well as transmitting TV signals to cables

• Broadcasting satellite service(BSS): Direct broadcast to home(DBS), inward Europe known every bit DTH

• Mobile satellite services: province mobile, maritime mobile, aeronautical mobile

• Navigational satellite services: GPS

• Meteorological satellite services: search as well as rescue service.

Satellite frequency bands 

Communications systems employ the EM frequency spectrum. The frequencies used for satellite communications are allocated inward super-high-frequency (SHF) as well as extremely high frequency (EHF) which are broken downwards into sub-bands.




Reference Site: https://en.wikipedia.org/wiki/Satellite

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