Reconstruction algorithm for acoustic measurement of velocity field of deep-sea hydrothermal vents
声学法深海热液速度场测量重建算法研究

The basic theory of acoustic velocity field measurement in deep-sea hydrothermal vents was introduced. The time of flight (TOF) of acoustic signals through hydrothermal vents was dependent on temperature and velocity. The velocity field was reconstructed by inverse problem solving techniques based on the relationship between the round-trip TOF difference and velocity of flow. The reconstruction of velocity field using the least square method was presented. At the same time, flow flux of reconstruction results was analyzed. The results show that the least square method has good accuracy. Increase of the number of acoustic transducers and mesh density can improve the reconstruction accuracy effectively.