Simrad TRANSDUCER - INSTALLATION GENERIC REV H Manuel d'installation Page 38

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SimradMS70
Transduceralignment
TheSimradMS70isaprecisioninstrumentforscienticuse.Inordertoproducedata
thatarebothdetailedandcorrect,itisnecessarytocalibratethesurveyvesselmore
accuratelythanwhatmayhavebeenastandardpracticeearlier.Theresults,withall
measurementstakeninacommonvesselcoordinatesystemmustbeenteredasMS70
operationalparameters.
Thecalibrationtasksinclude:
measurementofwheresensorsarelocated
measurementofhowsensorsareoriented
measurementofthewaterlineverticallocation
alignmentofangularmeasurementsensors
determinationofanyoffsetsinsensordata
determinationofanytimedelaysinsensordata
Topics
Measurementsonpage36
Vesselcoordinatesystemonpage37
Sensorlocationsonpage38
Measurementaccuracyonpage39
Transducerorientationonpage41
Headingsensorcalibrationonpage43
Alignmentsummaryonpage43
Note
Calibrationmustbetakenseriously.Itisrecommendedthatthistaskandthecontinued
controlofthesoundings’consistencyisassignedtoonemotivatedandqualiedperson
intheorganization.Toachievethebestresults,thecalibrationmustbeplanned
carefully,andmonitoredthroughouttheinstallationandtherstseatrials.Itisalso
recommendedtorepeatthecalibrationprocedureswithregularchecksthroughoutthe
operationofthevessel.
Measurements
Observethisgeneralintroductiontothealignmenttask.
Objectives
Thefollowingmeasurementsmustbemadeafterinstallation:
thehorizontalandverticalpositionsofthetransducerarray.
theangularorientationofthetransducerarray
thehorizontalandverticalpositionsofthemotionsensor
thehorizontalandverticalpositionsofthepositioningsystem(radioorGPSantenna)
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