Side Scan Sonar

Side-scan sonar is an affordable two-channel high-resolution digital side-scan sonar, mainly for the sports diving market. Side-scan sonar is also known as "side-side sonar" or "seabed geomorphology instrument". Equipment for detecting seabed landforms and underwater objects using the principle of echo sounding. The transducer array is installed in the hull or in the towing body, and emits the acoustic pulse of the fan-shaped beam to the side and down when traveling. The beam plane is perpendicular to the navigation direction, and the beam width is very narrow along the navigation direction. The opening angle is generally less than 2 ° to maintain higher resolution; the beam width is perpendicular to the route direction and the opening angle is about 20 ° -60 ° to ensure A certain scan width. The working frequency of the side-scan sonar is usually tens of kilohertz to hundreds of kilohertz, the duration of the sound pulse is less than 1 millisecond, the working distance of the instrument is generally 300-600 meters, and the working speed of the towing body is 3-6 knots, the highest Up to 16 knots.