Phương pháp xử lý tín hiệu và tạo ảnh 3D cho các vật thể dưới nước bằng công nghệ sonar chủ động
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 collected acoustic signal from many receivers. The 3-D imaging algorithm will calculate the pixel matrix value based on the sweep beam aperture, 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 2D plane or 3D space. The experimental results were carried out in some deep lake areas such as Hoa Binh, Dong Do lake, and Ha Long bay.
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