文章摘要
盛勇杰,王月兵,佟昊阳,赵涵,刘海楠,沈超.开阔水域下换能器指向性实船校准方法研究[J].声学技术,2021,40(4):581~586
开阔水域下换能器指向性实船校准方法研究
Research on ship-board calibration method for transducer directivity in open water
投稿时间:2020-10-09  修订日期:2020-12-07
DOI:10.16300/j.cnki.1000-3630.2021.04.023
中文关键词: 换能器  指向性  超短基线定位  坐标转换  实船校准
英文关键词: transducer  directivity  ultra-short baseline (USBL) positioning  coordinate conversion  ship-board calibration
基金项目:国防军工计量“十三五”科研计划项目(JSJL2018207B007)
作者单位E-mail
盛勇杰 中国计量大学计量测试工程学院, 浙江杭州 310018  
王月兵 中国计量大学计量测试工程学院, 浙江杭州 310018  
佟昊阳 杭州应用声学研究所, 浙江杭州 311499  
赵涵 杭州应用声学研究所, 浙江杭州 311499  
刘海楠 中国计量大学计量测试工程学院, 浙江杭州 310018  
沈超 中国计量大学计量测试工程学院, 浙江杭州 310018 chaoshen@cjlu.edu.cn 
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中文摘要:
      随着换能器谐振频率的降低,其尺寸一般会增大,现有的测量方法对其指向性的测量越来越困难,而且换能器在实船安装前后性能会发生变化。文章提出了一种基于三维立体水听器阵列的开阔水域下换能器指向性实船校准方法。利用超短基线定位和坐标转换确定待校准换能器与水听器阵列的位置与方向,并通过水听器阵的接收声压数据绘制换能器的指向性图。在湖上试验时分别使用标准测量法和实船校准法测量换能器的指向性,并对5 kHz和2.5 kHz频率下的实验数据进行对比分析,测试结果表明:-3 dB波束宽度误差分别为4.2%和7.4%,均满足水声测量误差低于10%的要求,证明了实船校准法的可行性和有效性。
英文摘要:
      The existing measurement methods are difficult for measuring the directivity of the transducer with decrease of its resonance frequency and increase of its size, moreover, the transducer performance changes before and after installation. In view of this problem, a ship-board calibration method of transducer directivity in open water based on 3D hydrophone array is proposed in this paper. The positions and orientations of the transducer to be calibrated and the hydrophones array are determined by using ultra-short baseline (USBL) positioning and coordinate conversion, and the directivity diagram of the transducer is drawn by extracting the received sound pressure data of hydrophone array. Both standard measurement method and ship-board calibration method are used to measure the directivity of the transducer respectively in lake trial, and the experimental data at 5 kHz and 2.5 kHz are compared and analyzed. The result shows that the -3 dB beam-width errors in the directivity diagrams at the two frequencies measured by the two methods are 4.2% and 7.4% respectively, which meet the requirement of underwater acoustic measurement (i.e. less than 10%), so the feasibility and effectiveness of the ship-board calibration method are confirmed.
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