Figure 2
From: A vibrating beam MEMS accelerometer for gravity and seismic measurements
Accelerometer noise power spectral density measurement (five independent repeat measurements overlaid) for responses recorded (a) in a seismic vault at Eskdalemuir, Scotland demonstrating a noise floor of <100 μGal/rt-Hz, and (b) in the Cambridge University lab. The corresponding Allan deviation data has been plotted in (c),d) demonstrating a bias stability of <10 μGal for an integration time >1000 s following linear drift correction.
