Satellite networking consists of ground segment, operation segment and space segment.
Satellite networking has obvious advantages: satellite networking is an Internet based on satellite communication: networking through a certain number of orbital satellites: forming a large-scale network radiating the world; building a large satellite system that can process II information in real time; it is a network that can provide Internet communication services to ground and air terminals. The coverage of traditional terrestrial Internet through wired communication and terrestrial wireless communication is limited: while satellite networking can cover the field lacking in terrestrial Internet: realize global coverage: it has low cost and low delay: satellite networking can be divided into space segment, ground segment and operation segment: space segment includes various satellite constellations; ground segment includes gateway station and measurement and control station, The operation section includes various user equipment and terminals.
LEO satellites are suitable for earth observation: according to different orbital heights, communication satellites can be divided into LEO satellites in low earth orbit, MEO satellites in medium earth orbit and geo satellites in geostationary orbit: orbital heights increase in turn: communication satellites with low altitude have strong uplink capability: they are suitable for earth observation: however, when the altitude is lower than 700km, atmospheric resistance has a great impact on satellite motion. Therefore, LEO satellites in low earth orbit have a high distribution density at 700-2000km.
The market scale continued to grow: China Spacesat Co.Ltd(600118) the market size of the networking industry increased from 22.54 billion yuan in 2016 to 30.92 billion yuan in 2020: the compound growth rate from 2016 to 2020 was 8.2%. The satellite networking related policies explored its potential market: the broadband population penetration rate of the two major economies in the world was less than 50%, In the context of network terminal ubiquity: covering a wider area and accessing more users is the inevitable trend of Internet development; while satellite networking has the characteristics of low cost, low delay, high bandwidth and wide coverage: it will help to improve the broadband population penetration: it is the meaning of equipment ubiquity.
Satellite networking aims to access more users who have not yet used Internet services: the broadband population penetration rate of the world’s top two economies, the United States and China, is less than 50%. The huge user base will bring great development opportunities to satellite networking.
