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, inwards the air, together with at sea. Satellites offering a publish of features non readily available alongside other way of communications.

As large areas of the Earth are visible from satellite, the satellite tin aeroplane the showtime betoken of the communications network together with tin simultaneously link geographically separated users.
Satellite communications organization is economical entirely where the organization is inwards continuous use. Thus costs tin live on reasonably spread over a large number
of users. Satellites aeroplane an essential business office of telecommunication equally

• Carrying large amounts of information together with telephone traffic
• Television signals
• Remote sensing equally detection of H2O pollution
• Monitoring together with reporting weather condition conditions.
• Search together with 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 3 regions:

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

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

Satellite services

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

• Broadcasting satellite service(BSS): Direct broadcast to home(DBS), inwards Europe known equally DTH

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

• Navigational satellite services: GPS

• Meteorological satellite services: search together with rescue service.

Satellite frequency bands 

Communications systems employ the EM frequency spectrum. The frequencies used for satellite communications are allocated inwards super-high-frequency (SHF) together with extremely high frequency (EHF) which are broken downwardly into sub-bands.




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