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Above ref:- Satellite Communication system by GERAND MARAL|MICHEL BOUSQUET|ZHILI SUN There are basic 5 building blocks for satellite internet shown in image. Satellite internet is wireless internet beamed down from satellites orbiting the Earth. It’s a lot different from land-based internet services like cable or DSL, which transmit data through wires. Since it’s the only internet service that’s available nationwide, satellite internet is often the only way to get online for many rural homes and businesses, although it does still come with a few disadvantages like live gaming or services which require less latency . Satellite comminication main moto to make signal available at each and every point of earth. There are 3 types of satellite  I am assuming that how a satellite can cover earth area depending upon its height from earth , means higher the atltitude possibility of covering earth from lesser no of satellites and lower the altitude higer no of satellite required to cover earth