Method for Processing Signals and Creating 3D Images for Underwater Objects using Active Sonar Technology

Abstract

The article proposes a method of 3D image signal processing for underwater objects by using sonar positioning technology. The proposed method is based on the acoustic signal collected from many receivers. The 3D imaging algorithm will calculate the pixel matrix value based on the sweep beam aperture of the transmit transducers, the
detected distance from the sonar scanner to the reflected object, the speed of ship movement, etc. After determining the image matrix value, the scanned image is reconstructed on the 3D space. The experimental results were carried out in some deep lake areas such as Hoa Binh, Dong Do lake and Ha Long bay.