It marks the establishment of a basic system for the navigation and positioning network.

它标志着北斗区域卫星导航定位的基本系统建设完成。

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This paper puts forward a method to construct a local positioning network based on the TDOA multiple stations cell positioning system.

文中论述了多站时差无源定位的基本原理，提出了以TDOA多基站小区无源定位系统为基础构建区域定位网络的方案。

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And by using the global positioning satellite network, vessels' positions can be monitored automatically, as is already the case around the Great Barrier Reef in Australia and the Georges Bank off the coast of Maine.

ECONOMIST: Marine conservation

Our investment in space exploration helped to create our satellite telecommunications network and the Global Positioning System.

CNN: Bush: 'It is time for America to take the next steps' in space

In line with the recent re-positioning of Twitter as not a social network, but an information and content network, Trammell believes his own experience reflects how others are actually using the service these days.

FORBES: The Story Behind Twitter's First Video Ad: 1 Million Views In One Day