A synthetic aperture sonar(SAS) achieving high azimuth resolution at long range has been studied for seafloor mapping. Images obtained from SAS, however, are not sufficient to acquire detailed information of seabed. Hence, in order to obtain the sharp...
A synthetic aperture sonar(SAS) achieving high azimuth resolution at long range has been studied for seafloor mapping. Images obtained from SAS, however, are not sufficient to acquire detailed information of seabed. Hence, in order to obtain the sharp image of the object, it is necessary to improve the resolution of the images. Beam forming techniques steer direction with the greatest sensitivity. We propose an application of beam forming to SAS for the accuracy improvement of imagery. Computer simulation and real data analysis show that an improvement of azimuth resolution is achieved and the reare differences between simulation rsults and real data results.