Digital signal processing techniques for obtaining high accuracy in ultrasonic distance measurements are presented. The proposed methodologies employ a suitable time-frequency representation (Wavelet Transform or Short Time Fourier Transform) to extract the envelope of the reflected pulse echo, together with a suitable pulse detection algorithm (threshold or correlation) for time-of-flight estimation. A complete meteorological characterization of the methods, in terms of systematic and random errors, is achieved, demonstrating the high overall performance. (C) 2001 Elsevier Science Ltd. All rights reserved.
Digital signal processing techniques for accurate ultrasonic sensor measurement / Andria, Gregorio; Attivissimo, Filippo; Giaquinto, Nicola. - In: MEASUREMENT. - ISSN 0263-2241. - 30:2(2001), pp. 105-114. [10.1016/S0263-2241(00)00059-2]
Digital signal processing techniques for accurate ultrasonic sensor measurement
ANDRIA, Gregorio;ATTIVISSIMO, Filippo;GIAQUINTO, Nicola
2001-01-01
Abstract
Digital signal processing techniques for obtaining high accuracy in ultrasonic distance measurements are presented. The proposed methodologies employ a suitable time-frequency representation (Wavelet Transform or Short Time Fourier Transform) to extract the envelope of the reflected pulse echo, together with a suitable pulse detection algorithm (threshold or correlation) for time-of-flight estimation. A complete meteorological characterization of the methods, in terms of systematic and random errors, is achieved, demonstrating the high overall performance. (C) 2001 Elsevier Science Ltd. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
