The car will be guided by a differential GPS system that corrects errors arising in global positioning satellite signals as they travel through the ionosphere and troposphere.

这款车将遵循差分式全球定位系统以纠正它在电离层和对流层行驶中全球定位卫星信号引起的误差。

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They are getting a lot more efficient; they have a lot better crop genetics and agronomic practices like no-till farming and things like GPS [satellite-dependent global positioning system].

布莱克说：“他们提高了生产效率，改良了作物品种，并运用诸如免耕直播及全球定位系统等手段改进耕作方式。

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The second technology is the satellite-based Global Positioning System (GPS), which can determine a vehicle's position to within a few metres.

第二项是基于卫星的全球定位系统（简称GPS），它对车辆位置的判断可在几米之内。

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The report calls for accelerating the use of the global positioning satellite system (GPS) in U.S. airspace and ultimately linking GPS and the air traffic control system to provide better and safer separation for planes flying in the United States.

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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

Inside, Williams explains, is a receiver tailored to make use of a signal from an atomic clock carried by a global positioning system satellite.

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