satellite internet

China's satellite Internet plan aims to build a high-speed Internet covering the world, and form a network by launching a large number of low orbit satellites, such as "Qianfan Constellation", to provide broadband Internet services for ground users and promote the development of the digital economy.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

Generally speaking, satellite Internet is to build a base station into space, make each satellite a mobile base station, and provide users worldwide with large bandwidth, flexible and convenient Internet access services. According to the different orbits of communication satellites, satellite Internet can be divided into high orbit and low orbit. Low orbit refers to the orbital altitude below 2000 kilometers from the ground. Compared to high orbit satellites, low orbit satellites have the characteristics of low latency and easy global coverage. The satellite orbiting the earth needs to apply for orbit and frequency band resources. The International Telecommunication Union (ITU) follows the principle of "first landing, first occupying, and always obtaining" in obtaining orbit and frequency band resources. The number of satellites that can be accommodated in low orbit space is limited, and the Earth's near Earth orbit can only safely accommodate about 60000 to 100000 satellites, which makes the competition for global low orbit satellite resources extremely fierce. Countries around the world have planned a grand low orbit satellite Internet networking plan. The "Star Chain" project alone plans to deploy 42000 satellites.