|
Title |
A Method to Enhance Dynamic Range for Seismic Sensor Using ARMA Modelling of Low Frequency Noise and Kalman Filtering
|
|
Authors |
성상만(Sang-Man Seong) ; 이병렬(Byeung-Leul Lee) ; 원장호(Jang-Ho Won) |
|
DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.4.043 |
|
Keywords |
3축 가속도계 ; ARMA 모델 ; 동적 범위 ; Kalman 필터 ; MEMS ; 지진계 3-axis accelerometer ; ARMA model ; Dynamic range ; Kalman filter ; MEMS ; Seismic sensor |
|
Abstract |
In this study, a method to enhance the dynamic range of seismic sensor is proposed. The low frequency noise included in the measurement of seismic sensor is modelled as an ARMA(Auto Regressive Moving Average) model and the order and parameters of the model are identified through system identification method. The identified noise model is augmented into Kalmman filter which estimate seismic signal from sensor measurement. The proposed method is applied to a newly developed seismic sensor which is MEMS based 3-axis accelerometer type. The experiment show that the proposed method can enhance the dynamic range compared to the simple low pass filtering.
|