从声呐反射信号判断海底沉积物类型

Classiticafion of Seafloor Sediments With Acoustic Reflection Data

根据水下超声波传播及反射的基本原理,导出了海底不同类型沉积物对单波束声波脉冲反射产生不同形状回波的模型。根据这一模型所作的计算机计算结果与实验记录数据进行了对比,两者之间有较好的一致性。基于这一模型对大面积水域的海试记录数据进行了处理。其结果与多波束声呐试验数据经图象处理的结果非常一致。

Waveform-oriented acoustic reverberation models of seafloor sediments are developed in this paper. The numerical integration of the models presents satisfactory consistence with the data from a test at sea. Based on these models, massive data sets from a sea test of larger area have been processed. The results are drawn in a map by use of a GIS software, the configura- tions of which appear very consistent with that from EM-2000 sonar imagery.