Abstract

Gravity is a science of the earth, researchers determined Earth's gravity and its variation over time. Gravity has scientific significance and tremendous practical, applied to the walls such as basic sciences: mapping surveying, geology, water resources, marine du¬ong school, astronomy, aeronautics, earth physics, defense ..., among the majors has the task requires gravity measurements with very high accuracy within several microGal when building or network repeater gravity measurement basis, Grade I national gravity, gravity exploration rate of 1/500 to 1/5000 huge, determine groundwater level variation ... for 2012 Vietnam counted no absolute gravity meter that must cooperate with Russian Federation in developing and improving the system of national gravity. Before the requirements of the field of geodesy and cartography, as well as key applications in other disciplines, the Institute is the Ministry of Natural Resources and Environment KHDDBD strengthening research on advanced geodetic gravity meters with the latest generation , including the system of absolute gravity meter FG5x, this is the system of modern equipment and the most accurate in the world today by the US producer. In 2 years the scientific staff of the Institute of surveying and mapping has researched utilization, applications in mapping surveying work, to master the system, making the process of measuring, processing data, particularly in applied research has explored the gravity of solid minerals, research applications in groundwater dynamics. In this paper would like to introduce FG5x machines include features and process measurement data processing and measurement of absolute gravity.