Emits sound waves to both sides of a towed or mounted unit, mapping the intensity of backscattered sound from the seafloor. The resulting plan-view image reveals seabed texture, objects, and debris fields. SSS is indispensable for seafloor classification, wreck detection, environmental assessments, and security applications.
Category
Core Acoustic Concepts
The Most Important Sonar Terms Explained
Acoustic Image
A visual rendering created by plotting sonar echoes by their intensity and time delay. Acoustic images resemble photographs but are generated by sound, revealing underwater scenes even in zero visibility.Acoustic Shadow
A dark or signal-void region behind an object that blocks the sonar beam. The length and shape of acoustic shadows help infer object dimensions and orientation, enhancing target interpretation.AUV (Autonomous Underwater Vehicle)
A self-navigating underwater robot that executes pre-programmed missions to collect sonar, imaging, or environmental data. It is used in deep-sea mapping, military reconnaissance, and oceanographic research where endurance and autonomy are required.