On March 3, SpaceX, the U.S. space exploration technology company founded by Elon Musk, launched another 47 Starlink satellites, which has also become the focus of everyone's recent hot discussion. Before discussing with friends the practical significance of starlink satellites, which are a transformative possibility for cars and mobile phones.
From a defensive point of view, the next generation of consumer-facing high-end mobile phones will likely have the function of satellite communication - through companies that support satellite communication (not a regular function, only for emergency use, users can use limited satellite communication functions to call for help). From 2022 to 2025, the global satellite industry revenue will continue to grow, with the changes in the world situation and we expected differently, the potential users of the market is very large, the target group includes 4 billion + aviation employees and passengers, 30 million sailing staff and passengers, accounting for about 5% of the 3 billion people in remote areas (200 million people) of the wealthy class, about 300 million outdoor travel adventure enthusiasts.
Figure 1 Starlink Starkink is a multi-purpose, multi-attribute infrastructure
From the point of view of use, in this Russian-Ukrainian incident, Elon Musk is also on the side, we can see from the following figure through the support of Space X, in fact, it is difficult to separate from military use.
Table 1 Multi-purpose Starlink
From the perspective of technical architecture, Elon Musk's Starlink plans to use more than 11,000 Internet satellites, distributed in a low-Earth orbit of 336-1325 kilometers from the ground. Satellites flying over each user's region will be fast, connection times will be extremely short, and data links will quickly switch to the next satellite. Starlink will use the new network communication protocol specifically applied to its Internet constellation, which is a decentralized connection network, users including satellites have the function of a server or client, data automatically circulated through the new protocol on these servers to achieve the best access latency and transmission speed.
Figure 2 The possibility of miniaturization of StarChain will broaden its usability
The hardware-level "end-to-end encrypted transmission design" allows for a wide range of communication possibilities in addition to cutting off physical network connections. The network topology is terminal-low star-laser-high star-laser-low star-terminal, and the data packets do not need to be disassembled and analyzed and packaged again, and the end-to-end direct hardware encryption connection is connected. The new networked interconnection system (hardware chips and protocols are all new), from satellites to receiving hardware to terminals are in the hands of SpaceX.
Figure 3 Find a place to output information like this
In 2022, Space X's third Starlink launch (36th in total) brings the total number of SpaceX's broadband satellites into orbit to 2091 so far (of which 1846 Starlinks are operating effectively), which is a cumulative process, and over time and the improvement of satellite performance, the iteration of the entire system will gradually improve the overall performance.
Figure 4 The dynamic coverage area of Starlink
Starting with Motorola's Iridium program, the technology here is a concept, a iridium satellite system of 66 low-orbit satellites that has attracted tens of billions of dollars in investment from around the world. 20 years ago, the relevant technology was not yet mature, and people were more hypothetical about the business situation. With the advancement of modern technology, the price of SpaceX satellites has also been several orders of magnitude cheaper, spaceX data transmission rate is much faster, and the demand for networking in this era has further increased.
Figure 5 Different satellite orbital technologies
brief summary:
Science knows no borders, but scientists need to take sides, and the same applies to businesses made up of people.
Figure | network and related screenshots
About author:Zhu Yulong, senior electric vehicle three-electric system and automotive electronics engineer, author of "Automotive Electronics Hardware Design".
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