Performance assessment of a Kalman filter-based method for ultrasonic time-of-flight estimation

Author

Angrisani, Leopoldo ; Baccigalupi, Aldo ; Lo Moriello, Rosario Schiano

Author_Institution

Dipt. di Informatica e Sistemistica, Univ. di Napoli Federico II, Italy

Volume

2

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

1058

Abstract

The paper deals with the performance assessment of a digital signal-processing method for ultrasonic time-of-flight (TOF) estimation. The method applies the discrete extended Kalman filter (DEKF) to the acquired ultrasonic signal in order to jointly estimate the shape parameters of echo envelope, thus granting unbiased location of its onset. Results attained in TOF-based distance measurements, conducted in different test conditions and configurations, confirm the method´s reliability and efficacy even in the presence of low signal-to-noise ratio as well as severe distortion of echo shape.

Keywords

Kalman filters; acoustic signal detection; direction-of-arrival estimation; distance measurement; nonelectric sensing devices; ultrasonic measurement; DEKF; TOF estimation; digital signal-processing method; discrete extended Kalman filter; distance measurements; echo envelope; performance assessment; shape parameters; ultrasonic signal acquisition; ultrasonic time-of-flight estimation; unbiased location; Distance measurement; Distortion measurement; Kalman filters; Nonlinear distortion; Shape measurement; Signal to noise ratio; State estimation; Stochastic processes; Time measurement; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2004 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-8412-1

Type

conf

DOI

10.1109/ULTSYM.2004.1417958

Filename

1417958