How Does Satellite Internet Work?

How Does Satellite Internet Works?

Besides SpaceX successfully working on Starlink satellites for high-speed internet services, Telesat is making plans to build a $5 billion global satellite network. But before we rush into that, let us understand what satellite internet is how it works.

Crux of the Matter

What Is Geostationary Satellite?
When a satellite is placed in an orbit around the earth (22,300 miles above) and it matches the rotation of the earth, making it a fixed or a stationary point in the sky.

What Is Satellite Internet?
It is a type of connection that uses a geostationary satellite to get an internet signal from the Internet Service Provider (ISP) to the user.

How Does It Work?
The orbiting satellite receives information from a satellite dish on earth and transmits it to the Network Operations Center (NOC). The NOC on land is connected to the user’s private network

Equipment Used for Ground Setup

  • Satellite modem: It converts the satellites signal into one readable by the computer’s network adapter.
  • Router: It takes the modem’s internet signal and distributes it at home/office.

What About Satellite Internet Constellation?
It is a constellation or a mega-constellation of artificial satellites providing satellite internet service. 

What Are The Pros Of Using It?
Lower latency (a measure of delay) as compared to existing services like optical fibre links. Eg: SpaceX’s Starlink has shown speed of 100+ Mbps, with a low latency of 20 ms.

  • Network neutrality, most commonly called net neutrality, is the principle that Internet service providers (ISPs) must treat all Internet communications equally, and not discriminate or charge differently based on user, content, website, platform, application, type of equipment, source address, a destination address, or method of communication. The term was coined by Columbia University media law professor Tim Wu in 2003, as an extension of the longstanding concept of a common carrier, which was used to describe the role of telephone systems.
  • Decentralized internet is a people-powered kind of internet that makes the web more democratic as there is no hosting company. A decentralized internet in concept is more secure and can provide better privacy to users.
  • Space debris is a term for defunct human-made objects in space—principally in Earth orbit—which no longer serve a useful function. As of October 2019, the US Space Surveillance Network reported nearly 20,000 artificial objects in orbit above the Earth, including 2,218 operational satellites.