Device and method for detecting main acoustic indexes of multi-beam sonar

A device for detecting main acoustic indexes of a multi-beam sonar emitter, comprising:

• an anechoic tank possessing an interior;
• a rotating device installed in the interior of the anechoic tank, the rotating device being configured to rotate the multi-beam sonar emitter about the longitudinal axis of the rotating device;
• the multi-beam sonar emitter provided at the bottom end of the rotating device, the multi-beam sonar emitter being configured to emit sonar signals in a horizontal direction perpendicular to the longitudinal direction, the multi-beam sonar emitter being further configured to detect sound;
• a lifting gear installed in the interior of the anechoic tank, the lifting gear extending in a longitudinal direction between an upper end and a bottom end opposite the upper end in the longitudinal direction;
• the lifting gear comprising a hydrophone at the bottom end of the lifting gear, the hydrophone being configured to detect real-time open-circuit voltage values reflecting sound waves;
• and
• a signal collector electrically connected to the hydrophone, the signal collector being configured to record the real time open-circuit voltage values.