Digital Instrument Response Correction for the Force-Balance Accelerometer

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Abstract
Correction for the instrument response of acceleration records obtained by force balance accelerometers (FBA) is necessary (a) to eliminate phase distortion at high frequencies, and (b) to broaden the useful frequency band up to, and beyond, the corner frequency of the system. The proposed algorithm contains operations in the time domain only and can be applied to any digitized record obtained from a FBA with known characteristics. The adequacy of the procedure depends on the accuracy of the information on the transducer's constants: damping ratio and natural frequency. An appropriate testing procedure is also presented.

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