Strait, J.
, Allen, R.
and Gaitan, M.
(2026),
Low-Frequency Calibration of Accelerometers by Rotation in the Gravitational Field at NIST, Metrologia, [online], https://doi.org/10.1088/1681-7575/ae5193, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=960882 (Accessed June 16, 2026)
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Low-Frequency Calibration of Accelerometers by Rotation in the Gravitational Field at NIST
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Abstract
We present a low-frequency accelerometer calibration system based on rotation in the gravitational field. Example characterizations of three MEMS accelerometers from (0.01 to 1.5) Hz with a new uncertainty analysis demonstrate k = 2 amplitude and phase uncertainty of <0.1 % and <0.2◦ respectively. This rotational system complements the linear shakers in the primary accelerometer calibration laboratory by improving uncertainty in the range of overlap and extending capability to lower frequencies. We demonstrate an amplitude comparison between the two approaches, showing agreement to within the rotational uncertainty of <0.1 %.Citation
Metrologia
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Created May 7, 2026, Updated June 15, 2026