Seafloor Imagery - Sidescan and Backscatter

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Topics to cover • Introduction to the Sidescan • Sidescan Theory • Sidescan Positioning • Resolution of systems (object detection) • Backscatter • Data collection • Sidescan Mosaicking ( processing ) • Data Interpretation • Sidescan data used for bottom classification That should keep us busy for the session.
Sidescan systems – why use them • A sidescan sonar can be used for a wide variety of survey operations. • Search and recovery • Geological Identification • Pre / Post dredge surveys • Target verification and location • It is also a useful tool for correlating • and verifying bathymetric data Shipwreck with shadow (in white) Sidescan data showing sediment change
Page 1: Seafloor Imagery Sidescan and Backs
Page 5 and 6: Sidescan types Sidescan frequency
Page 7 and 8: What to do with Side Scan data Mosa
Page 9 and 10: Sonar system components • The son
Page 11 and 12: Sidescan positioning Getting the po
Page 13 and 14: Operating a fixed mount (on survey
Page 15 and 16: Sidescan Resolution
Page 17 and 18: Along track resolution why objects
Page 19 and 20: How to do a self check of object de
Page 21 and 22: Backscatter How we see images on th
Page 23 and 24: Sidescan data collection
Page 25 and 26: Data collection in HYPACK Two progr
Page 27 and 28: Setting up a Sidescan Device In Sid
Page 29 and 30: Survey planning: 100% and 200% cove
Page 31 and 32: Sidescan TOOLS Many sidescan system
Page 33 and 34: Maintaining a Proper Bottom Track i
Page 35 and 36: The target height may not be exact
Page 37 and 38: Sidescan Mosaic Processes Stage 1:
Page 39 and 40: Sidescan Mosaic Processes Stage 3:
Page 41 and 42: Sidescan Controls Adjustments Righ
Page 43 and 44: Sidescan Controls Adjustments Gains
Page 45 and 46: Targeting: Example
Page 47 and 48: Target Viewer and Classification U
Page 49 and 50: Resolution Calculator Determine the
Page 51 and 52: Using Coverage Map to manage target
Page 53 and 54:
Sidescan Interpretation
Page 55 and 56:
The Shadow Effect Imaging the seafl
Page 57 and 58:
Proving the chart is wrong On the c
Page 59 and 60:
Sidescan for bottom classification
Page 61 and 62:
GEOCODER Data Flow Side Scan Data F
Page 63 and 64:
Remosaicing Users can remosaic enti
Page 65 and 66:
Bottom Classification: Extracting t
Page 67 and 68:
Output ARA results to DXF Export AR
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Seafloor Imagery - Sidescan and Backscatter

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