在海面和海底，以及利用人造卫星在海洋上进行的大地测量工作。主要包括在海洋范围内布设大地控制网、海面和水下定位、测定海面地形和海洋大地水准面等。海洋大地测量为船舰精密导航、海洋资源开发、海洋划界、海面和海底各项工程设计和施工，以及研究海底地壳动态和潮汐变化等提供各种数据。
GPS是一种全天候的、高精度的连续定位系统。文中扼要地说明了它在工程测量和海洋大地测量中的应用前景。
GPS is a all - weather, high - accuracy and continuously - positioning system. The paper explains briefly its application prospects in engineering measurement and ocean geological measurement.
海面倾斜与高程基准密切相关，它已经受到大地测量学界和海洋学界的重视。
There is a close correlation between sea level slope and height datum, in which geodesylists and oceanographers are interested.
简述利用空间大地测量观测数据和海洋水文数据推求海面动力地形的方法。
Methods for estimating the dynamic ocean topography (DOT) using space geodesy observational data and ocean hydrological data were presented briefly.
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