Kongsberg Simrad EK80 Bedienungsanleitung

kongsberg.com/ek80

ADCP Calibration EK80

INSTRUCTION

MANUAL

110-0037585/A

May2023©KongsbergMaritimeAS

EK80

Widebandscienticechosounder

UsermanualforADCPcalibration

Release23.6.0

Thispublicationprovidesyouwiththebasicinformationrequiredto

calibratetheEK80systemttedwithrelevanthardwareforADCP

measurements.FormoreinformationaboutthepracticaluseoftheEK80

system,aswellasdetailedinformationaboutthefunctionsanddialog

boxesprovided,refertotheReferenceManualand/orthecontextsensitive

On-linehelp.

Note

Youmustneversetthesystemtopingunlessthetransducerissubmerged

inwater .Mosttransducersaredamagedbeyondrepairiftheytransmitin

openair .Preventinadvertentuseofthesystemwheneveratransduceris

notsubmerged.

Additionalend-userdocumentsrelatedtotheEK80systemcanbefound

onourwebsite.Thisincludespublicationsthataretranslatedintoother

languages.

•https://www.kongsberg.com/ek80

KongsbergMaritimeAS

www.kongsberg.com

Documentinformation

•Product:EK80

•Document:UsermanualforADCPcalibration

•Documentpartnumber:110-0037585

•DocumentISBNnumber:N/A

•Revision:A

•Dateofissue:28May2023

TheinformationcontainedinthisdocumentremainsthesolepropertyofKongsbergMaritimeAS.Nopartof

thisdocumentmaybecopiedorreproducedinanyformorbyanymeans,andtheinformationcontainedwithin

itisnottobecommunicatedtoathirdparty,withoutthepriorwrittenconsentofKongsbergMaritimeAS.

Warning

Theequipmenttowhichthismanualappliesmustonlybeusedforthepurposeforwhichitwasdesigned.

Improperuseormaintenancemaycausedamagetotheequipmentand/orinjurytopersonnel.Y oumustbe

familiarwiththecontentsoftheappropriatemanualsbeforeattemptingtooperateorworkontheequipment.

KongsbergMaritimedisclaimsanyresponsibilityfordamageorinjurycausedbyimproperinstallation,

useormaintenanceoftheequipment.

Disclaimer

KongsbergMaritimeASendeavourstoensurethatallinformationinthisdocumentiscorrectandfairlystated,

butdoesnotacceptliabilityforanyerrorsoromissions.

Supportinformation

Ifyourequiremaintenanceorrepair,contactyourlocaldealer.Youcanalsocontactususingthefollowing

address:[email protected].Ifyouneedinformationaboutourotherproducts,visit

https://www.kongsberg.com.Onthiswebsiteyouwillalsondalistofourdealersanddistributors.

110-0037585/A3

Tableofcontents

ABOUTTHISMANUAL..................................................................5

INTRODUCTION...........................................................................7

AboutacousticDopplercurrentproler(ADCP)calibration.................................................7

Vesselcoordinatesystemandrotationangles.........................................................................8

ADCPcalibrationsummary....................................................................................................9

Supportinformation..............................................................................................................10

CALIBRATINGTHEADCPSYSTEM..............................................11

Preparingcirclecalibration....................................................................................................11

CirclecalibrationforADCPinrealtime..............................................................................14

CirclecalibrationforADCPinreplay..................................................................................18

ReprocessingcalibrationresultsforADCP..........................................................................20

FUNCTIONSANDDIALOGBOXES...............................................22

Calibrationfunction..............................................................................................................22

CalibrationWizarddialogbox#1.........................................................................................23

CalibrationWizarddialogbox#2.........................................................................................24

CalibrationWizarddialogbox#2reprocess.........................................................................25

OptionsintheCalibrationWizardpage3.............................................................................26

CalibrationWizarddialogbox#3realtime................................................................27

CalibrationWizarddialogbox#3replay....................................................................35

UsermanualforADCPcalibration

4110-0037585/A

EK80

110-0037585/A5

Aboutthismanual

ThispublicationprovidesyouwiththebasicinformationrequiredtocalibratetheEK80

systemttedwithrelevanthardwareforADCPmeasurements.

Relevantproducts

ThispublicationprovidesyouwiththebasicinformationrequiredtocalibratetheEK80

systemforcurrentindicatormeasurements.Thepublicationisvalidforthefollowing

products:

•KongsbergEK80

Targetaudience

CalibratingtheEK80systemforADCPmeasurementsensuresthattheaccuracyisobtained.

Calibrationmustbetakenseriously.Toachievethebestresults,thecalibrationmustbe

plannedanddonecarefully.Duetothenatureofthedescriptionsandthelevelofdetail

providedbythispublication,itiswellsuitedforthosewhoare-orwishtobe-expertusers.

Agoodunderstandingofsystemfunctionsandcontrolsisessentialtofullytakeadvantage

ofthefunctionalityprovided.

Softwareversion

Thispublicationwascreatedforthefollowingsoftwareversion:23.6.0.

Onlineinformation

Allend-usermanualsprovidedforoperationandinstallationofyourEK80systemcan

bedownloadedfromourwebsite.Thisincludespublicationsthataretranslatedinto

otherlanguages.SelectedpublicationsarealsoprovidedinIETM(InteractiveElectronic

TechnicalManual)formats.Ourwebsitealsoprovidesinformationaboutotherproducts

fromKongsbergMaritime.

•https://www.kongsberg.com/ek80

Aboutthismanual

6110-0037585/A

Registeredtrademarks

Observetheregisteredtrademarksthatapply.

Simrad®,SIMRAD®andtheSimrad®logoareeitherregisteredtrademarks,ortrademarks

ofKongsbergMaritimeASinNorwayandothercountries.

Windows®isaregisteredtrademarkofMicrosoftCorporationintheUnitedStatesand

othercountries.

Wewantyourfeedback

Wealwayswanttoimproveourproducts.Wealsowantourend-userdocumentationto

becomprehensiveandrelevant.Y oucanhelp.Pleaseprovidecomments,suggestionsor

constructivecriticismtoanyofoursupportofces.

EK80UsermanualforADCPcalibration

110-0037585/A7

Introduction

Topics

AboutacousticDopplercurrentproler(ADCP)calibration,page7

Vesselcoordinatesystemandrotationangles,page8

ADCPcalibrationsummary,page9

Supportinformation,page10

AboutacousticDopplercurrentproler(ADCP)

calibration

ThepurposeofanADCPcalibrationistodeterminetheexactinstallationparametersfor

theADCPtransducerwithashighprecisionaspossible,aswellasthesocalledScaling

FactorfortheADCPdata.

ExactinstallationparametersfortheADCPtransducerisnecessarytoachievehighaccuracy

foreachping,removingthenecessitytocalculateanaverageacrossmanypingstoget

acceptabledata.

InstallationparametersarethepositionsandanglesfortheADCPtransducer,comparedto

theNavigationalReferencePoint(NRP).

Therearethreeinstallationangles.

•roll-rotationaroundthex-axisofthevessel

•pitch-rotationaroundthey-axisofthevessel

•yaw-rotationaroundthez-axisofthevessel.

InstallationpositionreferstothedistancefromtheNRPtothepositionoftheADCP

transducer.

Introduction

8110-0037585/A

•x-positionisgiveninthealongshipdirection

•y-positionisgivenintheathwarthshipdirection

•z-positionisgivenintheverticaldirection

ThedeviationangleandpositionareestimatedduringthecalibrationbycomparingtheGPS

andMRUoutputwiththeuncompensatedbottomtrackfromtheADCP .Whenapplyingthe

calibrationresultsthesedeviationsareaccountedfor,andahigherlevelofaccuracyand

lessbiaswillbeachieved.

Theprocessrequiresaspecicsetofsettingsfortheacoustics.Thissetupisaquired

automaticallyusingtheCalibrationWizard.Thevesselismovingaccordingtoaspecic

sailingpatternatadenedspeedandinasuitablelocation.Thedataobtainedduringthis

processisusedforcalibratingtheADCPfunctionality.

Vesselcoordinatesystemandrotationangles

Thepositionofallsensorsonavesselisdenedinthevesselcoordinatesystem.The

rotationangleinallthreeaxisdirectionsequallydescribestheorientationofeachsensor.

Theseparametervaluesareimportanttocompensateforwhenusingrollpitchandheading

incalculations.

Thevesselcoordinatesystemfollowstheright-handrule.Ifyoutakeyourrighthandand

alignthethumbwiththepositivex-axis,thencurlthengerssothattheindexngerpoints

inthedirectionofthepositivey-axis,yourmiddlengerpointsinthepositivez-axis.Using

thedenedorigoofthevesselyoucannowdenethecentreoftheinstalledunit.

Theorientationofaninstalledunitisspeciedbythreerotationangles,calledEulersangles.

Eachrotationisspeciedbyanangleofrotation.Therotationangleisdenedtobepositive

forarotationthatisclockwisewhenviewedbyanobserverlookingalongtherotationaxis

fromtheoriginofthecoordinatesystem.

Forexample,thecartsonaFerriswheelmovealongacirclearoundtheahorizontalaxis

throughthecentreofthatcircle.Ifacartmovesaroundthewheelonce,theangleof

rotationis360°.Ifthecartwasstuckhalfway,atthetopofthewheel,atthatpointits

angleofrotationwasonly180°.

EK80UsermanualforADCPcalibration

110-0037585/A9

•

aX-axis

Thisisthemainaxis

inthevessel’sforward

(alongship)direction.

Positivevaluesare

forwardrelativetothe

origin.Positiverotation

angleisstarboardside

down.

bY-axis

Thisisthetransverse(athwartships)direction.Positivevaluesaretoward

starboardrelativetotheorigin.Positiverotationangleisbowup.

cZ-axis

Thisistheverticaldirectioninparallelwiththemast.Positivevaluesaredown

relativetotheorigin.Positiverotationangleisbowtowardsstarboard.

dOrigo

Theorigoisthecommonreferencepointwhereallthreeaxisinthevessel

coordinatesystemmeet.Allthephysicallocationsofthesensorsarereferenced

tothereferencepoint.

ADCPcalibrationsummary

TheEK80systemmaybecalibratedinrealtimeorusingreplayles.Thecalibration

processinvolvesseveralstepsandpreparations.

Prerequisites

Thefollowingconditionsmustbeconsidered:

•AcalibrationmethodmeetingtherequirementsforaccuracyandqualityforADCPdata

mustbeselected.ForADCPcalibrationacirclecalibrationmethodisused.

•Asuitablelocationmustbeselectedbeforethecalibrationcanstart.

•HardwaresuchastransceiversandtransducersmustbeinstalledintheEK80software.

•Navigationalinputmustbeinplace,meaningaGPSandanMRUmustbeconnected.

•NTPTimesynchronizationmustbeused.

•Measurethewatertemperature

Introduction

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