A coefficient searching based vibration correction method

Absolute gravimeter has played an important role in geophysics, metrology, geological exploration, etc. It is instrument applying laser interferometry or atom to the measurement of gravitational acceleration <i>g</i> (approximately 9.8 m/s<sup>2</sup>). To achieve a high accuracy, vibration correction method often employed reduce influence reference object (a retro-reflector mirror) on result absolute gravimeter. Specifically, atomic-interferometry gravimeter, phase noise caused by mirror, namely phase, can be calculated from output signal sensor, either seismometer accelerometer, placed below next mirror. Considering this fringe atomic interferometer as function shift set control system corrected approach ideal sinusoidal curve, thus reducing fitting residual. Currently, parameters algorithm most methods used gravimeters are constant. As result, performances these may limited when practical transfer between real mirror and sensor variation due change environments. In paper, based simplified model previously proposed laser-interferometry new for presented. Firstly, detailed description its principle introduced. With searching algorithm, time delay proportional element obtained sensor. way, calculate adjusted their true values different environments, causing residual decrease much possible. Then results homemade NIM-AGRb-1 using analyzed. indicated that with standard deviation measured reduced 58% at best level quiet environment. future, performance will further improved other during measurements hostile