Kilka odpowiedzi związanych z problematyką działania megakonstelacji.Why Low-Earth Orbit Satellites Are the New Space Race9 August 2019, 06:00 CEST Updated on 31 October 2019, 10:30 CET By Greg Ritchie
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3. How fast is fast?OneWeb, a London-based company backed by Branson’s Virgin Group that’s begun launching washing machine-sized LEO satellites, recorded an average latency of 32 milliseconds in July 2019 on transmissions between space and South Korea. Musk, the founder of Space Exploration Technologies Corp., has said that his Starlink satellite system is aiming for a latency of 20 milliseconds initially, which he hopes eventually to cut in half. Talk like that has sparked interest among financial firms that have spent billions to speed up their terrestrial securities trading operations. High-orbit systems, by contrast, have a median latency of nearly 600 milliseconds. That’s adequate for broadcasting but is a barrier to real-time two-way communication.
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9. Is there room up there for all these satellites?No one knows how close existing satellites are to triggering the Kessler Effect -- named after NASA scientist Donald Kessler, who raised the possibility that if space becomes too crowded, there will be collisions that create more debris and more collisions. The U.S. Air Force is developing a ground based radar system known as the Space Fence that’s meant to track satellites and debris; in September, the European Space Agency moved a space probe after being warned it could come too close to a Starlink satellite. Another worry is that a more crowded sky will ruin the view. Astronomers complained after the SpaceX launch about sunlight they suspected was reflecting off the satellites, and Musk has asked his team to make them less reflective. (...)
https://www.bloomberg.com/news/articles/2019-08-09/why-low-earth-orbit-satellites-are-the-new-space-race-quicktake