DATA PROCESSING ‘MBMAX’ MULTIBEAM EDITOR HYPACK ® MULTIBEAM COURSE 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar MBMAX Introduction MBMAX menu, tool bar and line selector. Survey’s Done, Now What? Need to apply Tide and Sound Velocity corrections. Adjust offsets if necessary. Remove fliers from support sensors (GPS for example). Remove all multibeam flyers. But keep all the good points! Save to Edited format file when done. Re-edit if needed. That’s the simple explanation of what MBMAX does. 4/16/2017 HYPACK® Multibeam Training Seminar

New MBMAX Multicore Processors Uses WINDOWS’ Memory Mapping function to load Multiple Files simultaneously using ALL available CPU Processors. (12 Core Machines are now available) No more going to Lunch while the previous days survey data loads. SORRY ! 4/16/2017 HYPACK® Multibeam Training Seminar

Data Flow - MBMAX HYSWEEP SURVEY MBMAX HSX Previously Edited HYSWEEP SURVEY Data Additional Corrections for Raw Data Phase 1 Check Raw Parameters TID VEL HS2 XTF Other Vendor Raw Format Data Phase 2 Swath-Based Editing RAW HS2 HYPACK SURVEY Final Data Formats for Processed Data Phase 3 Area-Based Editiing XYZ XYZ GSF 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar MBMAX - Starting Up Launch MBMAX Menu or icon bar. Input File Formats HSX: Native format of HYSWEEP® Survey. HS2: MBMAX edit format. RAW: Native format of HYPACK® Survey. XYZ: ASCII files. XTF: Some XTF multibeam files can be converted for processing in MBMAX. Select Files Choose individual files or Select All (up to 255). 4/16/2017 HYPACK® Multibeam Training Seminar 5 5

MBMAX – Still Starting Up Open Options Process in Depth or Elevation mode. Auto Processing Hands off edit and save with filtering. Good for a ‘quick look’ or perhaps export to CUBE. Not commonly used. Corrections Tide File: If using files from Manual Tides. SV File: If using files from Sound Velocity program. Multiple SV Profiles Enter time of each cast. 4/16/2017 HYPACK® Multibeam Training Seminar 6 6

HYPACK® Multibeam Training Seminar Read Parameters A Lot Going On Here… Selections: Select devices. Option to load Sidescan to aid editing. Device Info: Change offsets if necessary. Survey Info: Some settings and information from the survey file. Presort: Simple data thinning removes 50 - 90% of sweeps. GPS Pre-Filter: Either Position or RTK Tides. Filters based on GPS Mode values, # of satellites, HDOP, and/or speed. Advanced Read Parameters RTK Tides: Selections to avoid double correction. Correct for Induced Heave: If MRU is not at boat CG. Remove Heave Drift: Averaging method nullifies drift. Adjust SV Profile…: Replace top of profile with sensor reading at the head. Ray Tracing: Select Line or Arc method or let MBMAX decide based on profile depth and sampling. Pat asked to note difference from SB Presort. Added SB Presort display to show that. 4/16/2017 HYPACK® Multibeam Training Seminar

Phase 1 - Raw Data Review Line by Line Review Check that devices are working – no flat lines. Check for heave drift. Edit Position data in track lines. (Block or Single point.) Use mouse wheel to zoom, right click to pan. Edit RTK tides. (Block or Single point) There’s editing to do! RTK tide and position spikes and heave drift. Arrows step between files. RED Line is Current Displayed File Tide graph: White is Raw Tide RED is processed RTK tide. 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar Phase 1 - Raw Data Review New SV Profile Window Data from SV Cast SV entered in the Sonar and recorded in the RMB record 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar Bad or NO Sound Velocity Profile 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar AFTER Correct Sound Velocity Profile Applied 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar Sound Velocity Error Chart (Feet) ( Difference in Sound Velocity in Feet per Second from Initial Setting )   10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 5 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.22 0.24 0.26 0.28 0.30 0.32 0.34 0.37 0.39 0.41 15 0.21 0.27 0.33 0.36 0.40 0.43 0.46 0.49 0.52 0.55 0.58 0.61 0.45 0.53 0.57 0.65 0.69 0.73 0.77 0.81 Depth (Feet) 25 0.25 0.35 0.51 0.56 0.66 0.71 0.76 0.86 0.91 0.96 1.01 0.67 0.79 0.85 0.97 1.03 1.10 1.16 1.22 35 0.50 0.64 0.78 0.92 0.99 1.06 1.14 1.21 1.28 1.35 1.42 0.89 1.05 1.30 1.38 1.46 1.54 1.62 45 0.82 1.00 1.09 1.19 1.37 1.55 1.64 1.73 1.83 1.12 1.32 1.52 1.72 1.93 2.03 55 0.44 1.11 1.23 1.34 1.45 1.56 1.67 1.78 1.90 2.01 2.12 2.23 1.58 1.70 1.95 2.07 2.19 2.31 2.43 65 1.71 1.85 1.98 2.11 2.24 2.37 2.51 2.64 0.42 1.13 1.99 2.13 2.27 2.41 2.56 2.70 2.84 75 1.82 2.28 2.59 2.74 2.89 3.04 0.48 2.60 2.76 2.92 3.08 3.25 85 2.93 3.10 3.28 3.45 3.29 3.47 3.65 95 0.38 1.15 2.50 3.66 3.85 4.06 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar Sound Velocity Error Chart (Meters) ( Difference in Sound Velocity in Meters per Second from Initial Setting )   10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 5 0.05 0.11 0.16 0.22 0.27 0.32 0.38 0.44 0.49 0.55 0.60 0.65 0.71 0.76 0.82 0.87 0.93 0.98 1.04 1.09 0.33 0.54 1.21 1.31 1.42 1.53 1.64 1.75 1.86 1.96 2.07 2.18 15 0.97 1.14 1.47 1.81 2.13 2.29 2.46 2.62 2.78 2.95 3.11 3.28 0.43 1.29 1.74 2.41 2.84 3.06 3.27 3.49 3.71 3.93 4.15 4.37 Depth (Meters) 25 1.36 1.62 1.91 2.45 2.73 3.01 3.55 3.82 4.09 4.64 4.91 5.19 5.46 1.63 1.94 2.94 3.62 4.26 4.58 5.24 5.57 5.89 6.22 6.55 35 1.52 2.26 2.67 3.05 3.44 4.22 4.97 5.35 5.73 6.11 6.49 6.88 7.26 7.64 1.30 2.59 4.36 4.82 5.67 6.99 7.42 7.86 8.30 8.73 45 0.48 2.91 3.43 4.42 5.42 6.38 7.37 8.35 8.84 9.33 9.83 1.08 2.72 3.23 5.45 6.03 7.09 8.19 9.28 9.82 10.37 10.92 55 0.59 1.19 1.79 2.39 3.00 3.56 4.20 4.80 5.40 6.00 6.63 7.20 7.80 8.40 9.00 9.61 10.21 10.81 11.41 12.01 2.61 3.88 5.23 7.23 8.51 9.17 10.48 11.13 11.79 12.45 13.10 65 0.70 1.41 2.12 2.83 3.54 4.96 7.83 9.22 9.93 10.64 11.35 12.06 12.77 13.48 14.19 0.75 2.28 3.81 4.53 5.34 6.87 8.44 10.70 11.46 12.23 12.99 13.75 14.52 15.28 75 0.81 4.08 4.85 5.72 6.54 7.36 8.18 9.04 12.28 13.92 14.74 15.56 16.38 0.86 3.48 5.17 6.98 7.85 9.64 12.22 13.97 14.85 15.72 16.59 17.47 85 0.91 1.84 2.77 3.70 4.63 5.50 8.34 9.27 10.24 14.84 15.77 16.70 17.63 18.56 1.95 3.92 4.90 5.82 8.83 10.85 11.78 14.73 17.68 18.67 19.65 95 1.02 2.06 3.10 4.14 6.14 7.25 8.29 10.36 11.45 12.44 15.55 19.70 20.74 2.17 3.26 4.35 6.47 7.63 8.72 10.91 12.05 13.09 16.37 17.46 21.83 4/16/2017 HYPACK® Multibeam Training Seminar

HYPACK® Multibeam Training Seminar SV Interpolation Option to Load Multiple SV Profiles Select multiple VEL files. Enter cast times. Limit of 48 VEL files. SV profile is interpolated for each ping. (Based on ping time, not location.) Interpolated cast is in White. Using an MVP: Cast data collection is done while underway. Cast files (VEL format) are time tagged automatically. 16 4/16/2017 HYPACK® Multibeam Training Seminar 16

HYPACK® Multibeam Training Seminar SVP Extension Goal: A reasonable profile beyond the reach of an ocean cast. Based on a model of Temperature, Pressure and Salinity. Salinity is relatively constant. Decreasing SV to 1000 meters (decreasing temperature). Increasing SV below 1000 meters (increasing pressure). T (deg C) S (PPT) Z (decibar) SV (m/sec) 9 34.0 500 1493 6 34.1 1000 1490 3 34.2 2000 1494 2 34.3 3000 1507 35.0 10000 1631 17 4/16/2017 HYPACK® Multibeam Training Seminar 17

HYPACK® Multibeam Training Seminar Adjustment Tools Data Adjustment in MBMAX Tide Adjustment, Centerline Method Interpolates the Tide based on the Time and Position of every data point, from the Tide Files of every Gage, at their stationing along the centerline. Tide Adjustment, 3 Point Method: Planar tide interpolation from 3 stations. Heave Adjustment (Delayed Heave), POS/MV and F180: Applies Post-processed Heave from files logged by the inertial system. Works great! POSPac Adjustments: Applies corrected position, heave, pitch, roll, heading, and Tide from POSPac *.OUT files. Example: Heave Adjustment Open file containing Post-processed (delayed) Heave. Enter hour difference, local minus UTC time. Click Adjust to finish. Verify it worked by comparing the heave graph before and after adjustment. 18 4/16/2017 HYPACK® Multibeam Training Seminar 18

HYPACK® Multibeam Training Seminar More Adjustment Tools POSPac Adjustments: Applies corrected Position, Pitch, Roll, Heading, and Tide from POSPac *.OUT files. Option to recalculate RTK tides (below). HYPACK RAW File Adjustments: Replace positions with GPS data recorded to the RAW file. RTK Tide Recalc: Set project geodesy for RTK tides (Geoid model, KTD file, etc.) MBMAX: Recalculate tides from project geodesy and WGS latitude, longitude, elevation. 19 4/16/2017 HYPACK® Multibeam Training Seminar 19

HYPACK® Multibeam Training Seminar Phase 2 – Swath Editing Another Line by Line Review Transition Phase 1 to 2: “Convert Raw to Corrected” in File menu. Use Filters to remove gross errors. Review each line graphically with Manual Edits if needed. Second Sweep Window for comparison. Sounding Info for details. 20 4/16/2017 HYPACK® Multibeam Training Seminar 20

HYPACK® Multibeam Training Seminar Phase 2 – Swath Editing Dual Sweep Windows 21 4/16/2017 HYPACK® Multibeam Training Seminar 21

HYPACK® Multibeam Training Seminar Filters Search and Filter Settings Spike: Removes points deviating from average depth (5 soundings). Quality: Filters based on sonar quality code. Intensity: Filters based on beam intensity value. Overhang: Looks for overhang pattern in sweep profile, and removes it. Works great! Safe unless you’re trying to sound underneath rocks. Use HYSWEEP® Survey Limits: Filter based on settings used at survey time. Savitsky-Golay: Low pass filter based on curve fitting. Low to High: Avoids removing good points. Doesn’t always work. Sometimes removes entire sweeps! Gate Size: Allowable distance from curve. Order: Flexibility of curve. Order 2 = straight line. Window Size: Number of soundings used in curve fit. Important !! NOT Good with Vertical Surfaces Overhang example 22 HYPACK® Multibeam Training Seminar 4/16/2017 22

Sound Velocity Adjustments Depth profile from a single sweep: Try to flatten it out. (Works best in flat areas) Important Assumption: Sound Velocity from the sensor at the sonar head is correct. Something needs to be right! Bottom slope Bottom curvature: flat bottom = zero curvature. Adjustment Toolbox 23 4/16/2017 HYPACK® Multibeam Training Seminar 23

Sound Velocity Adjustments Example 1: Moving Salt Water Wedge Before: Bottom curvature is clear – the ‘smiley’ face. Action: Block out the salt water wedge and shift it downward (Down Button). Tide’s going out. Result: A clear improvement. Each survey line can be corrected this way. 24 4/16/2017 HYPACK® Multibeam Training Seminar 24

Sound Velocity Adjustments Example 2: Missing SV Profile Before: Very poor depth data without a sound velocity profile. Action: Use New Profile option. Experiment with Gradient until the bottom flattens out. No Magical Fix here Result: New SV profile Greatly improved depth data. 25 4/16/2017 HYPACK® Multibeam Training Seminar 25

HYPACK® Multibeam Training Seminar Sweep Windows Graphical Review and Manual Editing Two windows, each with it’s own zoom level and perspective. Zoom, rotate and pan to see and ‘get at’ difficult points. Eraser, Block and Line Editing tools. 1,000 levels of Undo. Fast Edit Mode for block and line tools. Yellow X = points outside filter limits. The old graphics modes are still available. 26 4/16/2017 HYPACK® Multibeam Training Seminar 26

HYPACK® Multibeam Training Seminar View and Edit Options Sweep Tab Display Style Wiggle, Dot and TIN methods use standard Windows® graphics. Enhanced Sweep Graphics mode supports pan / rotate / zoom and requires OpenGL. Edit Mode (for Block and Line delete) Default: Points are selected but not removed until the delete tool (inside/outside block or above/below line) is pressed. Fast: The delete tool is pre-selected and points are removed as soon as the mouse button is released. Hence 1,000 levels of Undo! Block/Default mode. Click inside or outside button to delete. Block/Fast mode with delete inside pre-selected. Line/Default mode. Click above or below button to delete. Line/Fast mode with delete above pre-selected. 27 4/16/2017 HYPACK® Multibeam Training Seminar 27

HYPACK® Multibeam Training Seminar More Editing Tools F5: Marks a Target. Undelete Block: Restores deleted points. Point Flag: Flags a questionable sounding for examination in Phase 3. Sidescan: Shows the sidescan record to assist editing. If it shows up on sidescan, don’t delete it. Hand: Toggles Rotate/Pan Mode on/off Rotate/Pan On: Mouse pointer is a hand. Left-Click Mouse Rotates and Tilts the display. Right-Click Mouse Drags and Pans the display. Rotate/Pan Off: Mouse pointer is an arrow. Left-Click Mouse drag places an edit block or line on the display. Point Flag helps you locate a point later. Sidescan record. Arrows give sounding location. 28 4/16/2017 HYPACK® Multibeam Training Seminar 28

Phase 3 – Area Based Editing All Lines Combined (Overlapping Perspective) Transition Phase 2 to 3: “Area Based Editing” in File menu. Soundings are grouped in Matrix cells for statistics and display. Three Windows: Survey (all data), Profile (matrix row) and Cell. Survey Window Cell Window Profile Window 29 4/16/2017 HYPACK® Multibeam Training Seminar 29

Matrix Options Transition to Phase 3 Use existing HYPACK® MTX file or, Auto-Size to data. Very convenient. Option to Rotate to Survey Line is useful as profiles will cut across the channel. Cell Size: Auto Cell Size determines best fit, about 25 soundings per cell. Enough for reasonable statistics. Matrix Options selected on transition to Phase 3. 30 4/16/2017 HYPACK® Multibeam Training Seminar 30

HYPACK® Multibeam Training Seminar Editing Windows Profile Window Survey cross section. Color coding by survey line makes it easy to compare overlap. Survey Window Overview of the entire survey. 3-D zoom, pan, tilt and rotate to help ‘interpret’ the soundings and select areas of interest. View depths or statistics. Cell Window Cell statistics; table and histogram. Flyers stand out! 4/16/2017 31 4/16/2017 HYPACK® Multibeam Training Seminar 31

Statistical Search and Filter Search and Filter Options Select a statistic to represent each cell. (Median works well.) Select limits above and below. Then: Filter. Be careful not to over-filter. Search. Locates marginal soundings then you decide. Filter Limits (yellow) in Cell Window 32 4/16/2017 HYPACK® Multibeam Training Seminar 32

HYPACK® Multibeam Training Seminar Save Your Work Choose a File Format HS2: For additional editing (MBMAX, CUBE, Cloud). For export (e.g., Fledermaus). You should always SAVE to this Format XYZ: For export and additional processing (e.g., TIN Model). XYZ, Intensity: For intensity mapping. GSF: Generic Sensor Format. For Geocoder. XYZ Reduction Save one XYZ point per cell. Select survey depths (by type) or statistics. Save at any time during an edit session. Save early and save often! 33 HYPACK® Multibeam Training Seminar 4/16/2017 33