TOP
英國出版界指標大獎肯定!A.F. Steadman 獲年度作家,《史坎德》系列帶你踏上熱血奇幻旅程
The Rise and Fall of Comsat ― Technology, Business and Government in Satellite Communications
90折

The Rise and Fall of Comsat ― Technology, Business and Government in Satellite Communications

商品資訊

定價
:NT$ 8249 元
優惠價
907424
若需訂購本書,請電洽客服 02-25006600[分機130、131]。
無法訂購
商品簡介
作者簡介

商品簡介

Satellite Communications grosses over $100 billion annually, and is heading towards $200 billion. COMSAT started all of this in 1963 when it was organized in compliance with the Communications Satellite Act of 1962. COMSAT was responsible for choosing geosynchronous earth orbit (GEO), forming INTELSAT, and generally promoting the technological change that saw satellite power increase from the 40 Watts of Early Bird (INTELSAT I) to the almost 10 kilowatts of INTELSAT IX; earth station antennas were reduced from 30 meters to 1 meter. The business of satellite communications was expanded to mobile communications and, less successfully for COMSAT, domestic telecommunications (DOMSATs) and television broadcasting. After pioneering this technology and growing the market, COMSAT fell prey to changes in government policy (the INTELSAT Definitive Arrangements, Reagan's Separate Systems, and ORBIT) and to its own lack of entrepreneurial talent. After its purchase by Lockheed Martin in 2000, COMSAT was closed down in 2001.

The author explores the factors which contributed to this rise and fall of COMSAT.

作者簡介

After BA and MS degrees in Astronomy at Boston University and University of Massachusetts, USA, respectively, and five years in the United States Navy (A6A Intruder), Dr. Whalen began a 30-year career as a communications satellite engineer. Since 2007, he has been teaching in the Space Studies Department at the University of North Dakota, USA, where he was Space Studies Department Chair from 2007 to 2010.

購物須知

外文書商品之書封,為出版社提供之樣本。實際出貨商品,以出版社所提供之現有版本為主。部份書籍,因出版社供應狀況特殊,匯率將依實際狀況做調整。

無庫存之商品,在您完成訂單程序之後,將以空運的方式為你下單調貨。為了縮短等待的時間,建議您將外文書與其他商品分開下單,以獲得最快的取貨速度,平均調貨時間為1~2個月。

為了保護您的權益,「三民網路書店」提供會員七日商品鑑賞期(收到商品為起始日)。

若要辦理退貨,請在商品鑑賞期內寄回,且商品必須是全新狀態與完整包裝(商品、附件、發票、隨貨贈品等)否則恕不接受退貨。

優惠價:90 7424
若需訂購本書,請電洽客服 02-25006600[分機130、131]。

暢銷榜

客服中心

收藏

會員專區