A sonar device that measures water depth by emitting a downward acoustic pulse and timing the return of its echo from the seafloor. The system calculates depth by multiplying the sound’s travel time by the velocity of sound in water and dividing by two. Echosounders are central to hydrographic surveying, dredging control, fishery studies, and underwater navigation. Compact echosounders are also used on drones and unmanned vessels for quick deployment in shallow or remote locations.
Category
Core Acoustic Concepts