Research on dynamic swing experiment of atomic gravimeter based on the inertially stabilized platform

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Abstract Based on the principle of quantum interference, with excellent accuracy, sensitivity, and stability, miniaturized and portable atomic gravimeters are gradually exploring the possibility of applying them to mobile platforms such as ships. However, the vibration noise brought by the dynamic environment has a great influence on it. To explore the stability and reliability of the atomic gravimeter in the mobile platform, we built a dynamic measurement system of the atomic gravimeter in the laboratory. With the help of the swing test bench, the swing of the roll and pitch directions was added to the system to simulate the wave environment, and the dynamic swing experiment was carried out. By changing different swing levels, the system can work in different vibration environments and measure the gravity value. The experimental results show that the atomic gravimeter can work normally in various swing environments, and the internal coincidence accuracy of 1.861 mGal is achieved. The measurement standard deviation of 2.194 mGal and the resolution of 1.160 mGal@48 s are obtained under static conditions. The measurement standard deviation of 34.200 mGal and the resolution of 9.538 mGal@48s are obtained under mixed swing conditions. Under the condition of mixed rolling, the standard deviation of the interference phase noise of the atomic gravimeter and its contribution to the resolution of gravity measurement reach 23.121 π mrad and 2.045×10−6 g/shot, respectively. Our work provides a new reference for the research of high-precision atomic gravimeters based on quantum sensing technology in the field of gravity measurement in ship-borne environments.