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 16:06:58 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 次 (11298 bytes)
本文内容已被 [ 竞选 ] 在 2019-05-26 17:07:54 编辑过。如有问题,请报告版主或论坛管理删除.

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: 

不错 -amigo- 给 amigo 发送悄悄话 amigo 的博客首页 (44 bytes) () 05/26/2019 postreply 16:08:31

以后手机要带个锅盖? -奔流12959- 给 奔流12959 发送悄悄话 (0 bytes) () 05/26/2019 postreply 16:11:16

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 16:21:22

wifi信号可以传播380-420公里(维基百科) -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (2214 bytes) () 05/26/2019 postreply 16:43:48

为啥我们这里的网络商都以wifi覆盖整个房子为卖点之一呢?按理能覆盖上百公里的,几十个房子都能覆盖了呀。这卖点不值钱啊。 -月饼歌- 给 月饼歌 发送悄悄话 (0 bytes) () 05/26/2019 postreply 16:55:44

直觉这是另一个铱星。美国纳税人估计补贴几十亿美元够这家公司活几年的 -校园歪脖树- 给 校园歪脖树 发送悄悄话 (0 bytes) () 05/26/2019 postreply 16:34:53

这是MUSK自己私人出资建设的,SpaceX的火箭和发射的卫星都是私人的,使用是要收费的,很便宜因为用户遍及全球各个角落 -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (0 bytes) () 05/26/2019 postreply 16:47:40

即使每个手机每月上网交5美元,马斯克的收入也是天文数字,这是一个很赚钱项目 -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (0 bytes) () 05/26/2019 postreply 16:50:51

马斯克就是看准了Starlink能为他带来丰厚的利润才动手的,不过这个通讯技术还可以军用,转租通讯卫星供租者专用 -竞选- 给 竞选 发送悄悄话 竞选 的博客首页 (0 bytes) () 05/26/2019 postreply 17:12:14

这种私企带动的创新,是美国这个社会的恒久的活力之所在。 -老看客- 给 老看客 发送悄悄话 老看客 的博客首页 (0 bytes) () 05/26/2019 postreply 18:15:30

请您先登陆,再发跟帖!

发现Adblock插件

如要继续浏览
请支持本站 请务必在本站关闭/移除任何Adblock

关闭Adblock后 请点击

请参考如何关闭Adblock/Adblock plus

安装Adblock plus用户请点击浏览器图标
选择“Disable on www.wenxuecity.com”

安装Adblock用户请点击图标
选择“don't run on pages on this domain”