LBL Calibration
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Transcript of LBL Calibration
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 1
LBL CALIBRATION
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 2
INTRODUCTION
The purpose of this section is to give you some of the theoretical background information needed for LBL calibration and MULBL setup
The section is written for general operation and you might therefore find topics not relevant for your use of the system
Note that file names, water depths, channel numbers, values in defaultparameters, interrogation interval, and other settings might be different in live operations than in the screen dumps in this section
Note that the screen dumps in this training manual are taken with different APOS software versions and not necessarily fit the software you have on-board or in a standard APOS Trainer
Special simulator and setting files must be installed on an APOS Trainer to get the same screen dumps as in this section
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 3
DOCUMENT LOGISTICS
Revision Date Written by— A 25.09.00 TOS — B 18.01.01 TOS— C 03.04.01 TOS— D 06.08.01 TOS
History Changes— A First edition— B Minor changes— C Removed slides : Geographical calibration
Removed slides : Error ellipsis New slides : Recover array transponders
— D New information about LBL runtime calibration and wizardLayout changed to fit new graphical profile
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 4
WHAT IS LBL CALIBRATION ?
Long base line calibration is to decide the local coordinate system of the transponders deployed for use in an LBL array
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 5
CONTENTS
01 Front page02 Introduction03 Document logistics04 What is array calibration ?05-08 Contents09 Planning a LBL array10 Operating area11 Seabed footprint - transducer beams 12 Number of transponders 13 Surface footprint - narrow beam14 Surface footprint - wide beam15 Array radius - narrow beam transponder16 Array radius - wide beam transponder17 Array geometry18 Transponders with clump weight19 Transponder channels 20 Pre deployment check list21 New LBL calibration wizard approach22 LBL runtime calibration approach 23 LBL array data approach24 Geographical calibration approach
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 6
CONTENTS
25 Open file with configured transponders26 Default parameters27-30 Array radius as marker31 SSBL positioning32 Open New LBL calibration wizard dialog33 Prepare LBL calibration34 LBL channels35 Measure baselines or not36 Set position mode37 Array prepared for positioning38 Locations and error ellipses39 Open LBL positioning dialog40 LBL positioning screen dump41 Initial and calibrated positions42 Transponder parameters43 Measured baselines details44 Position setup
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 7
CONTENTS
45 Open LBL runtime calibration dialog46 Start and stop log buttons47 Calculate button48 Measurement residuals49 Result of measurements - positions50 Result of measurements - 1 sigma positions51-52 Graphically presentation of calculations53 Update LBL array data with calculated positions54 Last update information55 LBL positioning screen dump56 Blank page for special print-outs57 Initial and calibrated positions58 Transponder parameters59 Measured baselines details60 Position setup 61 Open LBL array data dialog62 Calibrated to initial positions63 Change error ellisis for initial positions64 LBL calibration mode65-68 Baseline measurements
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 8
CONTENTS
69 Calculate calibrated positions70 Decide error ellipsis calculation method71 Calibrated position72 Initial and calibrated positions73 LBL position mode74 Activate LBL positioning75 LBL positioning screen dump
76 LBL positioning screen dump
77 MULBL principle78 Master and backup master transponder79 TAD & LIC80 Position intervals81 MULBL position mode82 Activate master transponder83 Activate MULBL positioning84 MULBL positioning screen dump85 Dual MULBL setup86 Activate dual MULBL positioning87 Dual MULBL positioning screen dump88 Dual MULBL positioning screen dump details 89-92 Recover array transponders
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 9
PLANNING A LBL ARRAY
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 10
OPERATION AREA
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 11
SEABED FOOTPRINT - TRANSDUCER BEAMS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 12
NUMBER OF TRANSPONDERS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 13
SURFACE FOOTPRINT - WIDE BEAM
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 14
SURFACE FOOTPRINT - NARROW BEAM
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 15
ARRAY RADIUS - NARROW BEAM TP
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Kongsberg Simrad AS - Training Department LBL Calibration - page 16
ARRAY RADIUS - WIDE BEAM TP
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 17
ARRAY GEOMETRY
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 18
TRANSPONDERS WITH CLUMP WEIGHT
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 19
LBL TRANSPONDER CHANNELS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 20
PRE DEPLOYMENT CHECK LIST
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 21
NEW LBL ARRAY WIZARD APPROACH
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 22
LBL RUNTIME CALIBRATION APPROACH
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 23
LBL ARRAY DATA APPROACH - STEP BY STEP
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 24
GEOGRAPHICAL CALIBRATION APPROACH
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 25
OPEN FILE WITH CONFIGURED TRANSPONDERS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 26
DEFAULT PARAMETERS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 27
ARRAY RADIUS AS MARKER
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 28
ARRAY RADIUS AS MARKER
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 29
DEPLOY AND MONITOR TRANSPONDER
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 30
DEPLOY AND MONITOR TRANSPONDER
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 31
SSBL POSITIONING
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 32
OPEN NEW LBL ARRAY WIZARD
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 33
PREPARE LBL CALIBRATION
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 34
LBL CHANNELS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 35
MEASURE BASELINES OR NOT
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 36
SET POSITION MODE
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 37
ARRAY PREPARED FOR POSITIONING
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 38
LOCATIONS AND ERROR ELLIPSIS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 39
OPEN LBL POSITIONING DIALOG
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 40
LBL POSITIONING SCREEN DUMP
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 41
INITIAL AND CALIBRATED POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 42
TRANSPONDER ARRAY PARAMETERS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 43
MEASURED BASELINES DETAILS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 44
POSITION SETUP
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 45
OPEN LBL RUNTIME CALIBRATION
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 46
START AND STOP LOGGING
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Kongsberg Maritime
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CALCULATE BUTTON
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 48
MEASUREMENT RESIDUALS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 49
RESULT OF CALCULATION - POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 50
RESULT OF CALCULATION - 1 SIGMA OF POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 51
GRAPHICALLY PRESENTATION OF MEASUREMENTS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 52
GRAPHICALLY PRESENTATION OF MEASUREMENTS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 53
UPDATE LBL ARRAY WITH SUGGESTED POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 54
LAST UPDATE INFORMATION
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 55
LBL POSITIONING
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Kongsberg Maritime
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BLANK PAGE FOR SPECIAL PRINT-OUTS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 57
INITIAL AND CALIBRATED POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 58
TRANSPONDER ARRAY PARAMETERS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 59
MEASURED BASELINES DETAILS
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Kongsberg Maritime
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POSITION SETUP
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 61
OPEN LBL ARRAY DATA DIALOG
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 62
CALIBRATED TO INITIAL POSITIONS
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 63
CHANGE ERROR ELLIPSIS FOR ALL LOCATIONS
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LBL CALIBRATION MODE
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BASELINE MEASUREMENTS
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Kongsberg Simrad AS - Training Department LBL Calibration - page 66
BASELINE MEASUREMENTS
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BASELINE MEASUREMENTS
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Kongsberg Maritime
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BASELINE MEASUREMENTS
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CALUCLATE CALIBRATED POSITIONS
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DECIDE ERROR ELLIPSE CALCULATION METHOD
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CALIBRATED POSITIONS
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INITIAL AND CALIBRATED POSITIONS
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LBL POSITION MODE
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Kongsberg Maritime
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ACTIVATE LBL POSITIONING
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LBL POSITIONING SCREEN DUMP
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LBL POSITIONING SCREEN DUMP
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Kongsberg Maritime
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MULBL SETUP
In a multi user long base line array one extra transponder is normally included in the LBL array
The local calibration will be done as with a normal array
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Kongsberg Maritime
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MASTER AND BACKUP MASTER TRANSPONDER
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TAD & LIC
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Kongsberg Maritime
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POSITION INTERVALS
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MULBL POSITION MODE
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Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 82
ACTIVATE MASTER TRANSPONDER
![Page 83: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/83.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 83
ACTIVATE MULBL POSITIONING
![Page 84: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/84.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 84
MULBL POSITIONING SCREEN DUMP
![Page 85: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/85.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 85
DUAL MULBL SETUP
The vessel has two HiPAP®
transceivers and transducers
You want each HiPAP® to calculate a MULBL position
![Page 86: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/86.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 86
ACTIVATE DUAL MULBL POSITIONING
![Page 87: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/87.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 87
DUAL MULBL POSITIONING SCREEN DUMP
![Page 88: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/88.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 88
DUAL MULBL POSITIONING SCREEN DUMP
![Page 89: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/89.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 89
RECOVER ARRAY TRANSPONDERS
Read battery status for all transponders in the array
![Page 90: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/90.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 90
RECOVER ARRAY TRANSPONDERS
Stop LBL/MULBL positioning
Set all transponders in SSBL mode
![Page 91: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/91.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 91
RECOVER ARRAY TRANSPONDERS
Release the transponders one by one
Monitor the position as it floats up to the surface - it might drift off
![Page 92: LBL Calibration](https://reader031.fdocuments.us/reader031/viewer/2022012307/5532991655034637098b466c/html5/thumbnails/92.jpg)
Kongsberg Maritime
Kongsberg Simrad AS - Training Department LBL Calibration - page 92
RECOVER ARRAY TRANSPONDERS