全球宽带网络工程Starlink的第一批60颗卫星一次性发射成功

来源: 竞选 2019-05-26 16:36:20 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 次 (11530 bytes)
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SpaceX is targeting Thursday, May 23 for the launch of 60 Starlink satellites from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. SpaceX’s Starlink is a next-generation satellite network capable of connecting the globe, especially reaching those who are not yet connected, with reliable and affordable broadband internet services. The launch window opens at 10:30 p.m. EDT on May 23, or 2:30 UTC on May 24, and closes at 12:00 a.m. on May 24, or 4:00 UTC.

Starlink is a satellite constellation development project underway by American company SpaceX,[1] to develop a low-cost, high-performance satellite bus and requisite customer ground transceivers to implement a new space-based Internet communication system.[2][3] SpaceX also plans to sell satellites that use a satellite bus that may be used for military,[4] scientific or exploratory purposes.[5]

 
Starlink constellation, phase 1, first orbital shell: approximately 1,600 satellites at 550 km altitude

SpaceX has plans to deploy nearly 12,000 satellites in three orbital shells by the mid-2020s: initially placing approximately 1600 in a 550-kilometer (340 mi)-altitude shell, subsequently placing ~2800 Ku- and Ka-band spectrum sats at 1,150 km (710 mi) and ~7500 V-band sats at 340 km (210 mi).[6] The total cost of the decade-long project to design, build and deploy such a network is estimated at nearly US$10 billion.[7]

Product development began in 2015, and two prototype test-flight satellites were launched in February 2018. A second set of test satellites and the first large deployment of a piece of the constellation occurred on 24 May 2019 (UTC) when the first 60 operational satellites were launched.[8] Initial commercial operation of the constellation could begin in 2020.[9]

The SpaceX satellite development facility in Redmond, Washington, houses the research, development, manufacturing and on-orbit control operations for the satellite Internet project.

所有跟帖: 

全部完成将需要发射7000-12000颗卫星,覆盖全球,随时随地可高速上网,不知地面是否需要类似wi-fi extender之类 -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (0 bytes) () 05/26/2019 postreply 16:37:22

wifi信号可以传播380公里(普通接受装置)-420公里(含6瓦信号放大器)(维基百科) -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (2289 bytes) () 05/26/2019 postreply 16:52:22

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