In recent years, the field of satellite Internet has shown a rapid development trend and has become the focus of space and military strategies of major powers. As a space mobile tower, low-orbit satellites not only have strategic value, but also have unique advantages in global single network coverage, providing infinite possibilities for innovation and progress in various industries.
Technical basis and characteristics.
Satellite Internet, which is based on technologies such as communication, navigation, and remote sensing, is driving progress in various industries. As infrastructure, satellites play the role of mobile towers in space, and build a space distributed computing platform through technological innovation. In a narrow sense, it aims to build a high-speed space communication network, eliminate the blind spots of terrestrial Internet coverage, and bridge the digital divide, which is characterized by wide coverage, low latency, broadband and low cost.
Track classification and comparison.
Communication satellites (LEO, MEO, and GEO) at different orbital altitudes have their own characteristics in terms of coverage, system capacity, transmission delay, and lifetime. The need for low latency and high capacity for next-generation communication systems is driving innovation in satellite technology. Due to their proximity to the ground, low-orbit small satellites have the advantages of low transmission delay, low link loss, flexible launch and low manufacturing cost, and are more suitable for supporting the development of satellite Internet services.
International competition and China plans.
There are more than 8,000 low-orbit satellites in the world, of which Starlink satellites account for two-thirds. The low-orbit satellite communication system has become the focus of commercial space technology and the space strategic competition of major powers, and many constellation projects such as Starlink, OneWeb, and China's GW have emerged. China's plans to build a massive constellation of 12,992 satellites demonstrate its ambitions in international competition.
Industrial chain and core technology.
The satellite communication industry covers the construction and operation of the space segment, the construction and operation of the ground segment, and the terminal market. The military dominates satellite launch services, while private enterprises play an important role in the development and service of terminal equipment. The construction of low-orbit satellite communication constellation involves space segment, ground segment and user segment, among which phased array antenna is the core component.
Innovation value and future prospects.
The rise has not only changed the way communication is done, but has also provided new impetus for technological innovation and global connectivity. In this exciting era, we will continue to lead the future development of science and technology to create a more convenient and efficient communication network for mankind.
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