1. HYPACK® Multibeam Training Seminar
HYSWEEP SURVEY
HYPACK ® MULTIBEAM COURSE
4/17/2017
4/17/2017
HYPACK® Multibeam Training Seminar 1

2. PROJECT: SAMPLE HYSWEEP SURVEY
Multibeam Survey Program
Collects and logs multibeam and support sensors.
Real time corrected displays and QC.
PROJECT: SAMPLE HYSWEEP SURVEY
4/17/2017
4/17/2017
HYPACK® Multibeam Training Seminar 2

3. HYPACK® Multibeam Training Seminar
HYSWEEP® Survey
Survey Preparation:
Geodetic parameters
HYPACK® and HYSWEEP® hardware configurations.
Planned lines and/or matrix for navigation.
TPU parameters, if you required to use Total Propagated Uncertainty.
TPU setup
Launch Survey:
Use menu or icon to run HYPACK® + HYSWEEP® Survey together.
HYPACK® Multibeam Training Seminar
4/17/2017

4. HYPACK® Multibeam Training Seminar
HYSWEEP® Main Window
Data file or “Offline” in title area.
Alarm Indicators
Green = OK.
Yellow = Something’s not right.
Red = Look Out!
Various system measurements updated once a second.
Select Boat or Towfish for display.
Typical Alarms:
Devices: Timeout, COM or Network port open error, checksum error.
QC: Heave drift, SV profile no longer valid (doesn’t match the sensor).
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5. HYPACK® Multibeam Training Seminar
Selectable Windows
15 windows to choose from.
Use the View Menu to enable individual windows.
Place windows anywhere on the screen.
Use View Options to configure windows. For example:
Set Depth Range.
Select Display Styles.
Setup QC tests.
Enable Layers.
Use Device Selection to select data when there is more than one source.
HYPACK® Multibeam Training Seminar
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6. Profile and 3-D Seafloor
Profile Window
Single sweep from aft looking forward.
Color coding can be based on beam quality. Useful QC.
Swath Width at top. (Based on Range Settings)
3-D Seafloor Window
Styles: Solid / Color TIN + Wireframe,
Color Dots (Useful for Gap display)
Mouse targeting and measurement.
Great tool for bottom visualization.
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HYPACK® Multibeam Training Seminar

7. HYPACK® Multibeam Training Seminar
Waterfall Windows
Multibeam Waterfall
Color or solid TIN display.
Good for visualization, targeting and comparison to sidescan.
Intensity Waterfall
Imagery. No depth information.
Average backscatter (one sample per sounding) or snippets (many samples).
Sidescan Waterfall
Sidescan data from the multibeam.
Full image control; colors, gains, bottom tracking, etc.
HYPACK® Multibeam Training Seminar
4/17/2017

8. HYPACK® Multibeam Training Seminar
HYSWEEP® QC Tests
QC Test Window
Select from four test displays.
“Std. Deviation by Beam” is a nice estimation if the bottom is reasonably flat.
Some Useful Alarms
Heave Drift: Alarm if average heave exceeds threshold.
SV Profile Minus Sensor Difference: Alarm if difference exceeds threshold.
Evidence of heave drift.
Alarm setup.
HYPACK® Multibeam Training Seminar
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9. TPU Window Total Propagated Uncertainty
Steps between vertical, horizontal and target size displays
Select survey
type
Change vertical scale
Parameters are entered in the HYPACK SHELL under:
EDITORS – TPU Editor
Based on the TPU Parameters and real time sounding info, you can calculate and display:
Total Sounding Uncertainty (Vertical)
Total Positioning Uncertainty (Horizontal)
Target Size Limit Value
Can display against:
IHO Special Order Requirements
IHO 1st Order Requirements
USACE Hard Bottom Requirements
USACE Soft Bottom Requirements
HYPACK® Multibeam Training Seminar
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10. HYPACK® Multibeam Training Seminar
Coverage Map
Show Multibeam Coverage Three Ways
Multibeam Coverage in HYSWEEP®: Fast and easy ‘stick’ plot. No setup is required. No depth information.
Filled matrix in HYSWEEP®: Cut cross sections through the matrix and track overlap QC. (Very Handy Tool)
Filled matrix in HYPACK®: Overlay on background files. No sections or QC.
Use View Options and Matrix Options to configure the coverage map.
HYSWEEP® Coverage
HYSWEEP® Filled Matrix
HYPACK® Filled Matrix
HYPACK® Multibeam Training Seminar
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11. Other HYSWEEP® Windows
Nadir Depth
Distance between your expensive sonar head and the bottom - turns red when too shallow.
Depth and Offset Limits
Tracks current, minimum and maximum sounding depth and horizontal offset.
Shore View
Laser scanner topographic display.
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12. HYPACK® Multibeam Training Seminar
Corrections
Sound Velocity
Type in depth and sound speed data or,
Import the profile from file.
The profile is applied ONLY in SURVEY for real time QC. Also saved for post-processing.
A typical profiler (Digibar).
HYSWEEP® Sound Velocity Editor
Squat and Settlement
Enter a table of draft adjustment vs. speed.
Be careful using this. Draft lookup is based on speed over ground, which does not account for current!
HYPACK® Multibeam Training Seminar
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13. HYPACK® Multibeam Training Seminar
Logging Data
HYPACK® Commands
Ctrl-S to Start, Ctrl-E to end logging.
Data logged to ASCII *.HSX file by HYSWEEP® Survey.
Two Data Files per Survey Line
Same root name (002_1116), different extension (HSX and RAW).
HSX logged by HYSWEEP® Survey: All data required to process multibeam. Offsets, soundings, positions, motion and heading data, tide, draft, SV …
RAW logged by HYPACK® Survey: Navigation and detailed position information, HYSWEEP Interface selected data, and any additional Devices that were set up in HYPACK Hardware
HYPACK® Multibeam Training Seminar
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14. HYPACK® Multibeam Training Seminar
HYSWEEP® Bar Check
Setup
+/- Depth Gate: Soundings that are Above/Below the Bar Depth with the +/- Gate are ignored.
+/- Angle Limit: Soundings outside the Beam Angle Limits are ignored.
Running The Test
Run Bar Check from the Tools menu.
Click “Reset Barcheck.txt” to clear the report.
Lower the bar and enter Bar Depth.
When Measured Depth stabilizes, click “Save Depth”.
Repeat for each bar depth.
When done, click “Barcheck.txt” to view or print the report.
Bar Check averages depths for three seconds then saves and graphs the result.
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15. HYPACK® Multibeam Training Seminar
HYSWEEP® Playback
HYSWEEP® windows are available in the Playback mode (F8 option).
HYPACK® Multibeam Training Seminar
4/17/2017