Marine Absolute Gravimetric Survey Based on Atomic Gravimeter

Abstract

Atomic gravimeter can be used for absolute gravity measurement and has the advantages of low drift, high accuracy and good long-term stability. It can be combined with traditional gravimeter to realize long period and high precision dynamic measurement of gravity field at sea. With the development of relevant technologies and the increasing demand of the application market, mobile and miniaturized atomic gravimeters at home and abroad have stepped out of the laboratory and gradually tried to measure absolute gravity in dynamic environments on platforms such as vehicle, ship and airborne. Based on the Marine atomic gravity measurement system of Zhejiang University of Technology, this paper introduces the system composition, measurement principle and existing difficulties. Based on this system, the first Marine absolute gravity network measurement in China is carried out, and the accuracy of repeated internal check is better than 1mGal.