IMPROVEMENT OF THE PRIMARY LOW-FREQUENCY ACCELEROMETER CALIBRATION SYSTEM AT INMETRO

摘要

This paper presents the results of recent improvements of the primary low-frequency accelerometer calibration system at INMETRO. The interferometric system was upgraded, a new software developed and the sine-approximation method was implemented. This new system allows the calibration of the complex sensitivity of accelerometers from 0,2 Hz to 100 Hz with reduced uncertainty.