本文描述了用最近研制的聚焦换能器阵测量鱼体各部分声散射的测量结果。其结果是鱼的后向散射与鱼的解剖特征紧密相关。本文还讨论了鱼的解剖特征与鱼回波幅值(消去了换能器指向性影响之后鱼的回波)概率密度函数中与鱼的种类有关的参数之间的关系。 This article describes the measurement of acoustic scatter in various parts of a fish using a recently developed focused transducer array. The result is that fish’s backscatter is closely related to fish’s anatomy. The paper also discusses the relationship between the fish’s anatomical features and the parameters associated with fish species in the probability density function of the fish’s echo amplitude (echoes of fish removed by the effect of transducer directivity).