几种作为参考目标的小球体在3MH_Z频率下的目标强度  

Target Strength for Different Kinds of Small Spheres at 3 MH_Z

作　　者：郭连喜 刘振才 

机构地区：[1]大连水平学院海渔系

出　　处：《大连水产学院学报》1993年第2期71-74,共4页Journal of Dalian Fisheries University

摘　　要：本文报道了在水槽中,根据测得的水声信号数据,经数学回归法计算,以图解方式求导出直径为30～40 mm 3种小球体在3 MHz频率下的目标强度情况。所获得的结果可供研究用声学法探测和评估小物标(如虾)时参考使用。The target strength for three different kinds of small spheres at frequency of about 3 MHz in a large water tank was determined by using regression analysis and graphic solution. The results obtained are promising and suitable for predicting small targets in fish abundance measurement.

关 键 词：目标强度 发射频率 水声仪器 

分 类 号：TB566[交通运输工程—水声工程]