采用双水听器的单波束测深仪模拟计量方法  

A method of calibrating single beam sounder using simulator based on double hydrophones

作　　者：马娟娟[1,2] 徐爱华 杨梅 宋潇 曾卓 MA Juanjuan;XU Aihua;YANG Mei;SONG Xiao;ZENG Zhuo(Institute of Seismology,CEA,Wuhan 430071,China;Wuhan Seismic Metrological Verification&Surveying Engineering Institute Co.,LTD,Wuhan 430071,China;Hubei Institute of Measurement and Testing Technology,Wuhan 430223,China)

机构地区：[1]中国地震局地震研究所,湖北武汉430071 [2]武汉地震计量检定与测量工程研究院有限公司,湖北武汉430071 [3]湖北省计量测试技术研究院,湖北武汉430223

出　　处：《工业计量》2024年第4期5-10,共6页Industrial Metrology

基　　金：中国地震局地震研究所和地壳应力研究所基本科研业务费专项资助项目(IS201816275)。

摘　　要：为了克服单波束测深仪模拟计量方法中换能器不参与计量过程的缺陷,同时为了对模拟法所用设备的通用普适性进行改进,提出了一种采用通用设备搭建、双水听器承接被测测深仪换能器以实现声电信号转换及延迟收发的设计方法。通过超声波耦合剂代替消声水池作为测深仪换能器缓冲区,对不同型号单波束测深仪的测深性能进行了测试,并与标准水池法结果进行比较。实验测试表明,在200 kHz工作频率下时,双水听器所致延迟小于9μs,该方法与标准水池法偏差基本小于1%,可以用于大量程测深仪快速计量。In order to overcome the defect that transducer of single beam sounder does not participate in the measurement process of calibrating single beam sounder using simulator,a method using conventional electronic equipments has good generality and flexibility,which contains the orchestration necessary to make double hydrophones be closed to the transducer of single beam sounder measured.Different single beam sounders were tested,using ultrasonic couplant to replace the anechoic pool as the acoustic medium.The results using this method are compared with those using standard pool method.The experimental test shows that at 200 kHz frequency,the delay time caused by the double hydrophones is less than 9μs,and the deviation of two methods is substantially less than 1%.This method can be used for fast measurement of single beam sounder in a large range.

关 键 词：单波束测深仪 水听器 模拟法 回波信号 

分 类 号：TB565.1[交通运输工程—水声工程]