In high-precision atomic gravimeters, a rest mass is needed to provide gravity reference, which typically the retro-reflecting mirror of Raman laser beams that addresses two hyperfine ground states specific free-falling test mass. We constructed compact active feedback control system for provides vibration isolation in vertical axis as well rotation stabilization horizontal plane. The reduction...

Precision measurements of local gravitational acceleration variations are great importance in geophysical surveys. With advantages such as cost-effectiveness and portability, Micro-Electro-Mechanical system (MEMS)-based gravimeters have shown the potential for long-term gravity measurements. In this paper, aiming to further improve stability instrument, design considerations evaluations a MEMS ...

3.04.1 The Superconducting Gravimeter 66 3.04.1.1 Historical 66 3.04.1.1.1 Early years at UCSD 66 3.04.1.1.2 Early commercial model TT instruments (1981–94) 67 3.04.1.1.3 The Compact SG (1994–2002) 68 3.04.1.2 Basic Principles of Operation 69 3.04.1.2.1 Superconducting components 69 3.04.1.2.2 Displacement transducer and feedback system 71 3.04.1.2.3 Temperature control 71 3.04.1.2.4 Tilt compe...