Survey speed in relation to Explain and identify the effects of sonar system parameters stratification of the water column and Towfish positioning develop mitigating strategies for Target aspect surveying in a variety of environmental Effects of motion and water conditions. properties on images Layback calculations H4.2g Side-scan Side scan sonar backscatter Interpret side scan imagery through data and sea floor reflection. assessment of individual and overlapping interpretation Side scan images and swaths to identify potential sonar targets mosaicking for further investigation. Sources of distortion and (A) artefacts from water column Interpret side scan imagery to assess properties, motion differences in seafloor composition and Determination of height, size topography. and position of seafloor features Sonar signature of wrecks, pipelines, gas, fish and fresh water, etc. H4.3 Seabed characterization H4.3a SBES full echo envelope Explain the concept of incidence Classification Sub-bottom profiler full dependence and describe the signal from acoustic processing steps required to obtain data Side scan sonar images corrected backscatter data for seafloor Synthetic aperture sonars characterization. images (I) Side scan and swath echo Explain the techniques available and sounders backscatter limitations for observing, interpreting and information classifying differences in seabed Ground-truthing characteristics from acoustic sensors. H4.3b Hyperspectral and Explain the techniques available and their Classification multispectral sensors images limitations for observing and interpreting
Survey speed in relation to sonar system parameters Towfish positioning Target aspect Effects of motion and water properties on images Layback calculations Explain and identify the effects of stratification of the water column and develop mitigating strategies for surveying in a variety of environmental conditions. H4.2g Side-scan data interpretation (A) Side scan sonar backscatter and sea floor reflection. Side scan images and mosaicking Sources of distortion and artefacts from water column properties, motion Determination of height, size and position of seafloor features Sonar signature of wrecks, pipelines, gas, fish and fresh water, etc. Interpret side scan imagery through assessment of individual and overlapping swaths to identify potential sonar targets for further investigation. Interpret side scan imagery to assess differences in seafloor composition and topography. H4.3 Seabed characterization H4.3a Classification from acoustic data (I) SBES full echo envelope Sub-bottom profiler full Side scan sonar images Synthetic aperture sonars images Side scan and swath echo sounders backscatter information Ground-truthing Explain the concept of incidence dependence and describe the signal processing steps required to obtain corrected backscatter data for seafloor characterization. Explain the techniques available and limitations for observing, interpreting and classifying differences in seabed characteristics from acoustic sensors. H4.3b Classification Hyperspectral and multispectral sensors images Explain the techniques available and their limitations for observing and interpreting
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