Active sonar for obstacle localization using envelope shape information

Author

Barshan, Billur ; Kuc, Roman

Author_Institution

Dept. of Electr. Eng., Yale Univ., New Haven, CT, USA

fYear

1991

fDate

14-17 Apr 1991

Firstpage

1273

Abstract

A sonar system that simulates the sensor configuration of echolocating bats is described. Two estimators for range and azimuth of an obstacle are developed, based on the received signal envelope. The standard threshold detector produces a biased time-of-flight (TOF) estimate. An unbiased TOF estimate is derived by using the echo waveform shape to estimate the object location. The estimates are most accurate if the obstacle is located along the line-of-sight, and improve with decreasing range

Keywords

acoustic signal processing; parameter estimation; sonar; acoustic signal processing; active sonar; azimuth estimate; echo waveform shape; echolocating bats; envelope shape information; line-of-sight; object location; obstacle localization; range estimate; received signal envelope; sensor configuration simulation; standard threshold detector; time of flight estimate; Acoustic beams; Acoustic sensors; Acoustic signal detection; Azimuth; Intelligent sensors; Piezoelectric transducers; Shape; Sonar detection; Sonar navigation; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150629

Filename

150629