广东海洋大学学报2024，Vol.44Issue(1)：111-117,7.DOI:10.3969/j.issn.1673-9159.2024.01.013
海底原位分层声学测量模拟装置的设计与实验
Design and Experiment of In-situ Layered Acoustic Measurement Simulator
摘要
Abstract
[Objective]In order to study the measurement characteristics of the in-situ survey device and the changing mechanism of the acoustic properties of seafloor sediments in different environments,this paper designed a seafloor in-situ layered acoustic survey simulator.[Method]The device was mainly composed of three parts:a hierarchical motion control unit,an acoustic measurement unit and a computer control unit.The electric cylinder controlled the hierarchical positioning motion and continuous motion of the acoustic measurement probe rod to realize the accuracy analysis of the motion of the acoustic measurement probe rod;By measuring and calibrating in water,the corrected distance difference and diffusion attenuation coefficient of the acoustic measurement probe of the device were obtained;by simulating in-situ layered acoustic measurement experiments,the acoustic properties of different types of seabed sediments were measured.[Results and Conclusions]The corrected distance difference between the acoustic measurement probe rods is 77.14 mm,and the average diffusion attenuation coefficient of the sound wave emitted by this device is(34.30±0.46)dB/m;the motion control accuracy of the acoustic measurement probe is sufficient,and it can accurately move into different layers for layered measurement of acoustic properties.Both positioning measurement and continuous measurement can obtain reliable experimental data.关键词
分层测量/海底沉积物/声学特性/系统标定/环境影响Key words
layered measurement/seabed sediment/acoustic characteristics/system calibration/environmental impact分类
海洋科学引用本文复制引用
李跃金,邹大鹏,杨华勇,崔小明,吴磊,李赶先..海底原位分层声学测量模拟装置的设计与实验[J].广东海洋大学学报,2024,44(1):111-117,7.基金项目
国家重点研发计划(2021YFF0501200) （2021YFF0501200）
国家自然科学基金(41976180) （41976180）
