浅地层剖面仪关键声学参数的检测技术研究  

Research on Measurement Technique of Acoustic Parametersof Sub-bottom Profiler

作　　者：王方旗 周兴华 林旭波 陶常飞 崔力 丁继胜 梁冠辉 董立峰 WANG Fang-qi;ZHOU Xing-hua;LIN Xu-bo;TAO Chang-fei;CUI Li;DING Ji-sheng;LIANG Guan-hui;DONG Li-feng(First Institute of Oceanography,MNR,Qingdao 266061,China;College of Ocean Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]自然资源部第一海洋研究所,山东青岛266061 [2]山东科技大学海洋科学与工程学院,山东青岛266590

出　　处：《海洋科学进展》2021年第1期118-127,共10页Advances in Marine Science

基　　金：国家重点研发计划项目——海上搜寻演示验证技术与评估(2017YFC0306003);国家自然科学青年基金项目——基于高分辨率声学剖面与钻孔岩心对比的金州湾海底地层声速研究(41606056);海洋公益性行业科研项目——常用海底声呐测量仪器计量检测关键技术研究与示范应用(201305034)。

摘　　要：基于在消声水池中对参量阵型浅地层剖面仪进行的声学参数测量试验及数据的处理分析,探索性地提出了一套完整的浅地层剖面仪关键声学参数检测与评价的解决方案。方案主要包括4部分:1)检测平台构建:简述了检测平台的主要组成部分,并对消声水池的建设提出了基本的技术要求;2)声学参数测量:介绍了浅地层剖面仪的声源级、频率和脉冲长度测量的方法和操作要点;3)数据处理分析:论述了测量数据预处理的目的和方法,给出了声学参数计算的主要公式和方法;4)符合性分析:分析各声学参数实测值与标称值的符合性及偏离度。本试验发现所用的浅地层剖面仪的关键声学参数的实测值与其标称值偏离较大,即说明书给出的标称值仅是参考性数值。因此,在进行浅地层剖面仪的检测与校准工作时,应对新购仪器进行强制性首检以获取其各参数准确的初始值。Based on a test for measuring acoustic parameters of a parametric sub-bottom profiler(SBP)in an anechoic tank and subsequent data processing and analysis,this study presented a complete exploratory solution for the measurement and evaluation of key acoustic parameters of SBP.The scheme mainly included four parts,1)Construction of the measurement platform,which includes briefly describing main components of the platform and putting forward basic technical requirements for the construction of the anechoic tank;2)Measurement of acoustic parameters,providing methods and operating points of the measurement of the sound source level,frequency and pulse length;3)Data processing and analysis,which includes discussions on purposes and methods of data preprocessing and providing main formulas and methods for calculating acoustic parameters;4)Conformity analysis,which analyzes the conformities and deviations between measured and nominal values of acoustic parameters.We suggested that the nominal values of acoustic parameters of SBP used in this test were only reference values or theoretical values.Therefore,it is important to carry out the mandatory first measurement for newly purchased instrument to obtain the initial values of the parameters.

关 键 词：浅地层剖面仪 声学参数 声源级 频率 脉冲长度 

分 类 号：P715[天文地球—海洋科学]