The Global Positioning System enables properly equipped users to determine precise time and velocity and worldwide latitude, longitude and altitude to within a few meters.

GPS允许持有对应设备的用户来确定精确的时间、速度、经纬度以及海拔，而误差只有几米。

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The special setting for precise positioning of the X-ray source in industrial Computed Tomography (ICT) system has been made, and the testing program has been developed.

为了实现工业CT系统射线源的精确定位，设计了射束中心位置测试专用装置，并开发了测试程序。

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To meet the requirement of precise GPS positioning in vehicle management system, and also to consider the development in the future, this paper introduces differential GPS projects.

为了适应现时特种车辆管理系统对车辆GPS定位的精度的需要，并考虑到未来的发展趋势，对差分gps方案进行了介绍。

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In 2003, Skyhook pioneered the development of the Wi-Fi Positioning System to provide precise and reliable location results in urban areas.

ENGADGET: Motorola gives Google the boot, turns to Skyhook for location services

But chip makers are having trouble making more precise beams, and the Global Positioning System, which allows people to locate themselves to within a few metres on the surface of the earth, is limited by the performance of its atomic clocks.

ECONOMIST: A new way has been devised to make a peculiar form of matter