Sound velocity measuring device and method for seabed exploration and sonar detection

• Main Authors: XUE BIN, DONG FANPENG
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

The invention is suitable for the technical field of marine surveying and mapping, and provides a sound velocity measuring device and method for seabed exploration and sonar detection. The sound velocity measuring device comprises a light source module used for emitting a first difference frequency light beam; the ultrasonic transducer is used for transmitting sound waves to the to-be-measured medium area; the light splitting module is used for enabling the second difference frequency light beam and the third difference frequency light beam to pass through a to-be-measured medium area in parallel; the distance measuring module is used for measuring the distance between the second difference frequency light beam and the third difference frequency light beam; the time measuring module is used for measuring the propagation time of the sound wave on the distance; and the speed calculation module is used for calculating the sound velocity according to the distance and the propagation time. According to the inventi