Abstract To solve the problem that the operation mode of the drive tray of NIM-3A and NIM-3C absolute gravimeters arise self-vibration and the influence of magnetic materials on the accuracy and stability of gravity measurement when they are used on vehicle or common base, a miniature absolute gravimeter host system is designed. The influence of self-vibration and magnetic materials was avoided by changing the previous servo tracking motion of the driving tray to a novel tray driving mode that measures the falling body with no other internal mechanical motion due to the first falling of the tray. In the situation of reducing the weight of the host system to 30kg, the measurement speed can be increased from 3 times/min for NIM-3A to 6 times/min, and the estimated measurement uncertainty decreased from 30μGal in the previous NIM-3C gravimeter to 10μGal.
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2022, Vol. 43 
