New experiment study of multi-beam synthetic aperture

The Multi-beam Synthetic Aperture Sonar is a new kind of the imaging sonar that combines the conventionality Synthetic Aperture Sonar and the Multi-beam Sounding Sonar. This paper based on the Multi-beam Synthetic Aperture Sonar theory introduces the Multi-beam Synthetic Aperture Sonar anechoic tank experiment. In this experiment there are two separated targets, which locate at the No.60 beam and No.63 beam. The transmitting transducer sends the signal with 80kHz main frequency, 8kHz broad width and 1ms pulse without heading. The computer processing results have tested the correctness of theory analysis and the efficiency of Multi-beam Synthetic Aperture Sonar algorithm. The results show that, compared with multi-beam bathymetry sonar, the new scheme can remarkably improve the along-track resolution and have the outstanding discernment, compared with conventional SAS, the new scheme can get more information of the target, thereby enhance the imaging quality. Finally the paper shows some experiments results when the Multi-beam Synthetic Aperture Sonar sampling space along track doesn´t meet the Synthetic Aperture Sonar sampling space along track law and give the helpful stuff to the future study.