声学调查

其中重点介绍了声学调查与评估，它包括调查设计、数据采集、目标强度确定、映像分析、数据处理、生物量计算等。

Emphasis is placed on the acoustic survey , which includes survey design , acoustic instrument calibration , survey data collection , fish target strength determination , echogram scrutinizing , data processing and fish biomass estimation .

1993年6～8月，北斗号渔业资源调查船在白令海阿留申海盆区进行了狭鳕资源声学调查及渔场环境调查。

During June to August , 1993 , the acoustic survey for walley pollock and the investigation of environment inhabited by them in the Aleutian Basin of Bering Sea were carried ort by R / V BEI DOU .

第二章针对目标离散分布和目标集群分布两种情况，以2010年1月黄海鳀越冬场声学调查数据为例，研究了声学数据处理中积分阈的选择和优化问题。

In the second chapter , the methods on the determination and optimization of integration threshold were studied for both scattered target and schooling target using the data collected during the survey of the wintering anchovy in the Yellow Sea in January 2010 .

北太平洋狭鳕资源声学评估调查研究

Stock assessment of walleye pollock in the North Pacific Ocean by acoustic survey

根据鄂霍茨克公海区狭鳕资源声学评估调查资料，研究了狭鳕分布状况及渔场环境特征，并分析了狭鳕行动分布与环境的关系。

Based on the acoustic survey on the resource of walleye pollock ( Theragra chalcogramma ) in the high seas of the Okhotsk Sea , the distribution of walleye pollock and the environmental characteristics of its fishing ground were studied , and the relationship between them were analyzed .

官渡区声学环境质量的调查研究

Acoustic Environment Quality in Guandu District

声学海洋鱼类资源调查方法

Acoustic method for fish stock investigation

1993年夏季白令海狭鳕资源调查期间，作者等应用声学／拖网评估调查方法，首次发现阿留申海盆区有大量当年生狭鳕幼鱼分布。

During a survey of Bering Sea pollock resources from June to August , 1993 , a large concentration of age zero pollock was discovered in the Aleutian Basin by using echointegration / midwater trawl survey method .