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Vol. 24, Special Issue, August 2013, pp. 19-27




Impact of Environmental Vibration on Inertial Sensors' Output
1 Jan ROHAC, 2 Stanislav DADO

Department of Measurement, Faculty of Electrical Engineering, Czech Technical University in Prague Technicka 2, 166 27 Prague, Czech Republic
Tel.: 1 +420 2 24353963, 2 +420 2 24352132, fax: +420 2 33339929
E-mail: xrohac@fel.cvut.cz, dado@fel.cvut.cz


Received: 15 May 2013   /Accepted: 16 August 2013   /Published: 30 August 2013

Digital Sensors and Sensor Sysstems


Abstract: The paper is dealing with an environmental strong-vibration impact on inertial sensors' output. In our case we measured data on the ultra-light aircraft ATEC 321, which did not have damped cockpit panel, and we recorded the data for post-processing. The main contribution of this paper is in frequency spectrum analyses of measured data, their validation, and filtering to ensure acceptable behavior of navigation systems relying on these data. The data suffered from strong vibration, which had big impact and thus it had to be removed before estimation of navigation parameters was performed. One example of navigation systems is an artificial horizon. Generally, it performs the aircraft attitude estimation just based on accelerometers and angular rate sensors data, and therefore the correctness and efficiency of data filtering as well as consecutive data processing plays a key role.


Keywords: Data processing, Wavelet multi-resolution filter, Angular rate sensors, Accelerometers.


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