Title :
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
fDate :
1/1/1992 12:00:00 AM
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;
Journal_Title :
Oceanic Engineering, IEEE Journal of
