多波束反向散射强度数据处理研究
Study on processing of multibeam backscatter data
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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.Abstract: A new high precise source of data has recently become available using multibeam sonar systems in hydrography.The multibeam sonar systems can provide hydrogr aphic quality depth data as well as highresolution 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.
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张叔英.地声学:一门研究海底的重要学科[J].物理,1997,26(5):280-285. 黄谟涛,翟国君,管铮,等.多波束测深技术研究进展与展望[J].海洋测绘,2000,20(3):2-7. ALEXANDROU D,PANTZARTZIS D.Seafloor classification with neural networks[A].IEEE Oceans'90 Conference Proceedings[C].New York:Institure of Electrical and Electronics Enginccrs,1990.18-23. HUSEDY R B,MILVANG O,SOLBERG A S,et al.Seabed classification from echosounder data using statistical methods[A].IEEE Oceans'93 Conference Proceedings[C].New York:Institute of Electrical and Electronics Engineers,1993.229-233. SIMRAD.Operator Manual of Konsberg Simrad EM950 Multibeam Echo Sounder[M].Norway:Kongsberg Simrad Company,1997. LURTON X,DUGELAY S,AUGUSTIN J M.Analysis of multibeam echo-sounder signals from the deep seafloor[A].IEEE Oceans'94 Conference Proceedings[C].New York:Institute of Electrical and Electronics Enginccrs,1994.213-218. ZIETZ S,SATRIANO J H,GENEVA Anthony.Development of physically-based ocean bottom classification analysis system using multibeam sonar backscatter[A].IEEE Oceans'96 Conference Proceedings[C].New York:Institate of Electvical and Electronics Engineers,1996.1 058-1 063. SIMRAD.Instruction Manual of Simrad Triton Seabed Classification[M].Norway:Kongsberg Simrad Company,1998. YANG Fan-lin,LIU Jing-nan.Seabed classification using BP neural network based on GA[J].Acta Oceanologica Sinica,2003,22(4):523-531. -
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