Investigation on the Noise Separation in Watt Balance Experiments
The detection of stationary and non-stationary noise in environmental vibration data is an important issue when considering the precision of the Watt balance, an electromechanical apparatus for the new definition of the kilogram in the international system of Units (SI). In this paper, the authors propose a frequency histogram method to find the structure of the stationary noise from large amount of datasets. For the non-stationary noise, the authors propose a wavelet based denoising methods to distinguish the transient events from the background “noise”, to find their duration and content and to identify their location in time.
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
W. Zeng et al., "Investigation on the Noise Separation in Watt Balance Experiments", Key Engineering Materials, Vols. 381-382, pp. 619-622, 2008