With reference to the gravity survey, this paper describes the schemes of control network layout used with global positioning system (GPS) technique for Donghai Bridge project over sea.
结合重力测量，介绍利用GPS技术进行东海大桥跨海工程控制网的布设技术方案。
GPS, or global positioning system, is a satellite-based navigation system made up of a network of 24 satellites.
或者说全球定位系统，是一种基于24颗卫星网络的卫星导航系统。
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