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How will Starlink launch - satellite Internet from Ilona Mask

Several days ago on Habré Article 3r3217 appeared. how Starlink - satellite Internet from SpaceX - will affect the work of banks and other organizations. Today we decided to continue this topic and talk about how the "star network" is planning to deploy.
 
 
3r311.
nasa.gov /PD [/i] 3r3147.
 
 

A few words about Starlink


 
Starlink is a network of near-earth satellites, which is developed by Ilona Mask SpaceX. The goal of the project is to create a high-performance communication channel that will provide an Internet connection anywhere in the world.
 
 
Starlink work began in 2015. At the same time, SpaceX predicted that 50% of all world traffic would pass through the “star network”.
 
 

How the 3r3122 network will be deployed.
 
A total of 4425 satellites will be put into orbit. They are will link with Starlink ground stations using radio waves Ku- and Ka-Bands with frequencies from 10.7 to 18 GHz and from 26.5 to 40 GHz, respectively. These bands are used to provide satellite television and the Internet and allow reception with relatively small antennas.
 
 
Prof. Mark Handley of University College London calculated the orbits of satellites based on data from SpaceX's public appeal to the FCC and modeled the operation of the system.
 
 
3r360. 3r361. 3r362. 3r3633.
 
At first, 1600 spacecraft will be sent to space. It is planned to distribute them in 32 orbits and “3r36969. place
"At an altitude of 1150 kilometers. Launches already approved US Federal Communications Commission (FCC).
 
3r3113. 3r33170. At the beginning of the month SpaceX sent An FCC statement requesting a transfer of orbits from ?150 kilometers to an altitude of 550 kilometers.
 
 
This will allow the malfunctioning apparatus to be attracted to the Earth, and not to remain in orbit. Given the fact that Starlink satellites need to be updated 3r33838. approximately every five years
, the transfer of the orbit will help reduce space debris. Plus, this will provide the same level of coverage with fewer satellites (16 pieces less).
 
 
The FCC has not yet commented on SpaceX's request, but the reaction of the Commission can be expected already this month. [/i] 3r3118. In any case, when the satellites are placed into a given orbit, they will be unevenly distributed. At this stage, the network will not cover the poles and Alaska. Between the 47 and 52 parallels of the north latitude, the "concentration" of satellites will be higher.
 
 
In this zone are the major cities - Paris, London, New York - which are the centers of international trade. Therefore, the network bandwidth in these regions should be higher.
 
 
Between themselves Starlink nodes will exchange data using laser technology. Each satellite will be constantly connected to the five closest devices in order to quickly find the best route to connect and reduce the delay in data transmission. According to preliminary estimates, the latency when transferring data from London to Singapore will be 93 ms. For comparison, in the "classic" networks, it is approximately 159 ms.
 
 
After all 1600 units start working, they will send as many spacecraft into space. However, they will be placed several tens of kilometers below the “first wave”. This will increase network coverage and avoid satellite collisions.
 
 
Finally, in the third stage, the remaining 1225 Starlink devices will be put into orbit. Their task is to provide communication for the region of the poles and Alaska.
 
 
3r3113. At the same time yesterday it became known that, in addition to the 4425 satellites mentioned, another ?518 vehicles will be launched. SpaceX received approval for the launch of the "second wave" of the FCC. These satellites will rotate around the earth at an altitude of 340 kilometers. 3r3118.
 
Opinions on Starlink


 
Although investors believe in the success of the project and ready wait for investments of at least 15 years, experts doubt the timing of the launch of the first Starlink satellites.
 
 
By 3r3131. opinion
analysts from research firm Forecast International, the start of Starlink, is likely to be postponed from 2019 to a later date due to disagreements in the project team. Ilon Musk fired seven company managers because of their failure to speed up the testing of prototype satellites.
 
 
How will Starlink launch - satellite Internet from Ilona Mask  
3r3142. 3r33170. /Wikimedia / U.S. Air Force /PD [/i] 3r3147.
 
 
Postponement is bad news for the project, since one of the main difficulties for SpaceX is hard deadline established by the FCC . According to the agreement, the Commission will withdraw the launch permit if half of the Starlink satellites will not work by 2023.
 
 
At the same time, experts believe that SpaceX will face r3r3217. with difficulties immediately after the launch of the first devices. Starlink will require a lot of maintenance money. The cost of networking 3r3-3160. Appreciate at least 10 billion dollars. But Professor Mark Handley does not see this as a problem. He is convinced that Starlink will be able to quickly find users who want to pay for access to high-speed Internet and pay for the project.
 
 
Among clients, he notes banks, stock exchanges and other organizations engaged in high-frequency trading. They will be able to extract the maximum benefit from the capabilities of the “star network” capable of transmitting a signal twice as fast as existing fiber optic connections.
 
 
3r33170. 3r3202. Read in our blog on the website VAS Experts: [/b]
 
 
3r3208.  
3r33180. Implementing IPv6 - FAQ for ISP
 
3r3185. A thicker “pipe” is more problems, or how 5G networks and DDoS
are connected.
 
3r3190. Firewall or DPI - protection tools for different purposes
 
3r3195. Internet to the village - we build radio-relay Wi-Fi-network
 
 
3r3202. And we have on Habré: [/b]
 
 
3r3208.  
To replace TCP: QUIC protocol is ready for[но не готов стать RFC]deployment.
 
Programmable valve arrays: how they will help networks 5G
 
[/i]

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17-11-2018, 03:23

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Development / Development of communication systems

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