Synthetic aperture sonar for seabed imaging: relative merits of narrow-band and wide-band approached

Author

Chatillon, Jacques ; Bouhier, Marie-Edith ; Zakharia, Manell E.

Author_Institution

Inst. de Chimie et de Phys. Ind. de Lyon, France

Volume

17

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

95

Lastpage

105

Abstract

The advantages of using wideband sonar systems in underwater acoustical imaging by means of synthetic aperture (side-looking) sonars are described and illustrated through simulation examples. The simulations are conducted for two cases of sonar platform motion: perfect trajectory and disturbed trajectory. Several schemes used for wideband synthetic aperture processing are investigated and their relative merits (resolution and complexity) in the case of both disturbed and perfect trajectories are evaluated. Quantitative image evaluation is initially achieved through the evaluation of performance as regards resolution. The problems involved in the definition of the image quality are discussed

Keywords

acoustic signal processing; picture processing; sonar; underwater sound; complexity; disturbed trajectory; image quality; narrowband sonar; perfect trajectory; quantitative image evaluation; resolution; seabed imaging; sonar platform motion; synthetic aperture sonar; underwater acoustical imaging; wideband sonar; Acoustic imaging; Frequency; Image quality; Magneto electrical resistivity imaging technique; Narrowband; Signal resolution; Sonar navigation; Synthetic aperture sonar; Underwater acoustics; Wideband;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.126958

Filename

126958