Utilization of new echo attributes for acoustic seabed classification and characterization

利用新的回波属性进行声学海底分类和表征

• 批准号: 354916-2007
• 负责人: Chapman, Ross
• 金额: $ 3.24万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=402360
• 关键词: Utilization; new; echo; attributes; acoustic

The single-beam echosounder is a standard marine surveying tool that generates echo returns used to map seabed bathymetry. These echo returns also contain information about the seabed, both from energy scattered back from the seabed surface and from the sediment volume immediately below the seabed. In limited situations, sediment properties have been characterized by direct estimates from these echoes. However, a more practical approach utilized by acoustic seabed classification systems is to extract descriptive statistics known as features from seabed echoes. This approach is common to present day commercial systems. Seabed classification systems apply segmentation algorithms to sets of features to divide the seabed into segments of similar acoustic character. Through ground truth information, these segments are often successfully related to classes of seabed types.

单波束回声测深仪是一种标准的海洋测量工具，可产生用于绘制海底测深图的回声。这些回波还包含有关海底的信息，既有来自海底表面散射回的能量，也有来自海底正下方沉积物体积的信息。在有限的情况下，沉积物特性的特点是从这些回波的直接估计。然而，海底声学分类系统采用的一个更实际的方法是从海底回波中提取称为特征的描述性统计数据。这种方法对于当今的商业系统是常见的。海底分类系统将分段算法应用于特征集，以将海底划分为具有相似声学特征的段。通过地面实况信息，这些分段往往能成功地与海底类型的类别联系起来。