It's one of four global (全球的) navigation networks, including the United States' GPS, Russia's GLONASS and the European Union's Galileo.

这是全球四大导航网络之一，其他三个是美国的全球定位系统、俄罗斯的格洛纳斯和欧盟的伽利略。

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The European Space Agency's Galileo constellation - the world's most sophisticated satellite navigation system which was launched today - will have SELEX Galileo's PHM atomic clocks on board.

SELEX Galileo公司今天推出Galileo星座，该星座是世界上最先进的卫星导航系统，卫星上将装备SELEX Galileo公司的PHM原子钟。

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The results suggest that GIOVE-B is operating well and in turn validates technologies integral to the EU-funded Galileo Satellite Navigation project.

测试活动的结果表明，GIOVE-B运转良好，并且已经将“伽利略”卫星导航计划所需的多种技术有效整合。

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While the participants engaged in much discussion there of Iraq, trade and other issues, the most significant result of the meeting may have been an agreement to ensure that Europes Galileo navigation system does not interfere with the frequencies used by Americas Global Positioning Satellite (GPS) system .

CENTERFORSECURITYPOLICY: Watch this space

But America's fears are economic as well as military: it suspects that the EU might try, for instance, requiring aircraft entering its air space to use Galileo-based navigation systems, to the detriment of American firms with products based on GPS. And European countries, China and the like might develop weapons that are compatible with Galileo rather than GPS, which would mean American defence firms losing a competitive advantage.

ECONOMIST: Space race | The

Take the arguments for building an expensive EU satellite navigation system, Galileo.

ECONOMIST: Charlemagne