【摘要】 条带测深仪又称多波束地形测绘声呐。９０年代以来，由于海洋测绘事业的需要，我国已向国外引进并开始自行研制这类声呐。本文首先介绍了它的基本工作原理。第２节分析进入接收机的海底反向散射信号的特征，说明了这一信号有很大的幅值动态范围的原因。第３节讨论了两种不同性质动态范围压缩方法，并给出了实现的硬件框图、软件流程图和部分试验结果更多还原

【Abstract】 Swath echo sounder or multi beam survey sonar has been imported from abroad and is being developed recently in our country to meet the requirements of ocean exploration. This paper first introduces the basic principles of the sonar. In second section the signal features of sea bottom backscattering, received by the receiver, is analyzed, and why the signal has a large dynamic range is explained. In third section two different methods of dynamic range compression are discussed. Their hardware frame software flowchart and some results are given.更多还原