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Digital signal processing techniques for high accuracy ultrasonic range measurements

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3 Author(s)
Parrilla, M. ; Inst. de Autom. Ind., Madrid, Spain ; Anaya, J.J. ; Fritsch, C.

Several digital signal processing (DSP) methods are analyzed and compared with respect to the expected errors for an ultrasonic range measurement arrangement. These include L1, L2 norms and correlation with different approaches for envelope extraction. The influence of different factors such as signal-to-noise ratio (SNR), sampling frequency, and digitizing resolution on measurement errors is analyzed using a synthetic approach through nearly 40000 simulations. Results show different performance levels involving accuracy, computing time, and cost for the studied methods, although all of them allow reduction of errors by several orders of magnitude

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Instrumentation and Measurement, IEEE Transactions on  (Volume:40 ,  Issue: 4 )