【摘要】 在探讨多波束测深系统反向散射强度与海底底质类型的关系基础上,研究影响反向散射强度的各种因素,主要分析了海底地形起伏、中央波束区反射信号对反向散射强度的影响,并给出了消除这些影响的方法;将处理后的“纯”反向散射强度数据镶嵌生成海底声像图,为海底底质类型划分以及地貌解译提供了基础数据和辅助判读依据.更多还原

【Abstract】 A new high precise source of data has recently become available using multibeam sonar systems in hydrography.The multibeam sonar systems can provide hydrographic quality depth data as well as high-resolution seafloor sonar images.The seafloor backscatter strength data of each beam are utilized from the multibeam sonar and the automatic classification technology,so that the seafloor type identification maps can be got.To analyze all kinds of error effects in backscatter strength data is based on the relationship between backscatter strength and seafloor types.Analyzing the influences of local bottom slope and near nadir reflection in backscatter strength data is emphasized on and the correction algorithms and results of these two influent factors are also given.After processing the raw backscatter strength data and correcting error effects,the processed backscatter strength data can be got which only reflect the features of seafloor types.Applying to the processed backscatter strength data and mosaicked seafloor sonar images,seafloor classification and geomorphy interpretation are engaged in.更多还原