Susan三叶草 2021年12月23日上午6:17

2021-12-23 07:06:2302:29 16

声音简介

A Spectacularly Big Failure

Few companies have launched their product with more fanfare than the Iridium Satellite Network— mobile phones that would allow people to call from literally anywhere on the planet by tapping into a complex celestial network of satellites. Vice President Al Gore helped launch Iridium's product by placing its first call—to Alexander Graham Bell's grandson.Iridium was largely funded and managed by Motorola, one of the most highly regarded microelectronics and telecommunications companies in the world.
Company executives and Wall Street analysts alike confidently projected that Iridium would revolutionize mobile communications,attracting millions of users.The Iridium team had conducted extensive research to assess the market— and it was there.They had defied the odds and managed to convince governments around the world to allocate spectrum to the signals that the satellites needed.
Traditional cell phones connected users to each other by relying on towers to relay signals from one to the next.It wasn't always reliable; if there wasn't a tower in a critical location that could pass the call along, the system dropped the call.The Iridium strategy,in contrast,would send each call from a customer to a satellite- which would then send the call back to earth, to the intended recipient. If the customer was on the other side of the earth,the satellite would send the signal to another satellite that was positioned to send the call to the recipient.That meant that you could call someone from almost anywhere on earth.
巨大的失败

很少有公司像铱星卫星网络公司那样大张旗鼓地推出他们的产品——移动电话，它可以让人们通过进入复杂的卫星天体网络，从地球上的任何地方打电话。美国副总统艾伯特·戈尔通过给亚历山大·格雷厄姆·贝尔的孙子打第一个电话，帮助推出了铱星的产品。铱星主要由摩托罗拉资助和管理，该公司是世界上最受尊敬的微电子和电信公司之一。
公司高管和华尔街分析师都自信地预测，铱星将彻底改变移动通信，吸引数百万用户。铱星团队进行了广泛的研究来评估市场——市场就摆在那。他们不顾艰难险阻，说服各国政府为卫星所需的信号分配频谱。
传统手机依靠信号塔将信号从一个人传递到另一个人，从而将用户相互连接起来，但是并不总是可靠的；如果关键位置没有可以传递呼叫的塔，系统就在此中断。相比之下，铱星的策略是将客户的每一个电话都发送到卫星上，然后卫星将电话发回地球，发送给预期的接收者。如果客户在地球的另一边，卫星会将信号发送到另一颗卫星，该卫星被定位为将呼叫发送给接收者。这意味着你可以从地球上几乎任何一个地方打电话给任何人。

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Susan三叶草 2021年12月25日上午8:40
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Susan三叶草 2021年12月23日上午6:17
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Susan三叶草 2021年12月20日上午6:19
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Susan三叶草 2021年12月17日上午6:33
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Susan三叶草 2021年12月17日上午6:11
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Susan三叶草 2021年12月16日上午6:18
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Susan三叶草 2021年12月15日上午5:47
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Susan三叶草 2021年12月14日上午5:54
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Susan三叶草 2021年12月13日上午6:33
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Susan三叶草 2021年12月13日上午5:59
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2021-12