A communication satellite is basically an electronic communication package placed in orbit around the earth.
If a transmitting station on earth cannot communicate directly with one or more receiving stations because of line of sight restrictions, then satellite can be used.
The satellite in this application is known as repeater.
The diagram shows the basic operation of communication satellite.
The satellite contains a receiver which picks up the transmitted signal, amplifies it, and translates it to a new frequency.
This new frequency is now transmitted to the receiving station on the earth.
Satellites offer a number of important features, and the are mension bellow,
- Very large area of earth is visible from satellite (about 42%).
- Satellite offers communication with remote communities in sparsely populated area, which are difficult to access by other means of communication.
- Satellite communication ignores political boundaries as well as geographical boundaries.
- Satellite provides communication with moving aircraft from ground control station across the country.
- Satellite provides remote sensing i.e. detection of water pollution, oil field, monitoring and reporting of weather conditions etc.
The diagram shows the basic operation of communication satellite.The satellite contains a receiver which picks up the transmitted signal, amplifies it, and translates it to a new frequency.This new frequency is now transmitted to the receiving station on the earth.Satellites offer a number of important features, and the are mension bellow,