Acoustic sounding device, acoustic sounding method and multibeam acoustic sounding device

摘要

To provide an acoustic sounding device capable of correcting a shaking caused by a waves to a ship without using an acceleration sensor.A transmission unit that periodically transmits a transmission signal as ultrasonic waves in water, a reception unit that receives echoes of ultrasonic waves, and a control unit that controls transmission of echoes from the transmission signal forming unit, A correlator for discriminating an echo corresponding to a transmission signal by performing a correlation process using a pseudo noise sequence signal and acquiring depth raw data based on a time difference between a transmission signal and an echo; (2D / Vu) or less when the velocity of the sound wave in the water is Vu and the depth is D, and the period of the transmission signal is equal to or less than (2D / Vu) and the oscillation component The sampling theorem is satisfied as compared with the period of.(FIG.