Simrad SU90 - System Description

SimradSU90
Systemdescription
ThisSU90screencaptureshowsyouatypicalcatch
situation.Thepresentationprovidesyouwithalotof
information.
ACurrentrange,transducertiltandgain
BSonarpresentation
CCursor’ sposition,bearing(relativetothevessel),
rangeanddepth
DPurseseineandtargetinformation(depthand
estimatedschoolsize),includinginformationfrom
catchmonitoringdepthsensors
EMenusystem
FVerticalview
GNavigationinformationandhullunitposition
TheSimradSU90
isalongrange
omnidirectionallow
frequencysonar.
Itisdesignedformedium
andlargesizedshing
vessels,preferablyfor
purseseiners,butitis
alsowellsuitablefor
trawlers.
TheSimradSU90
allowsyoutochoose
anoperationalfrequency
between20to30kHz
(in1kHzsteps).The
cylindricalmulti-element
transducerallows
theomnidirectional
sonarbeamtobetilted
electronicallyfrom
+10to–60degrees.
Thisallowsyouto
automaticallytrack
schoolsofsh,and
toobservethewhole
watervolumearound
thevessel.Astabilising
systemisincludedfor
electronicpitchandroll
compensation.
TheSimradSU90hasbeendesignedwithnocompromises.ComparedtotheSX90,the
numberofchannelsisincreasedby50%givingthesonaranevenbetterperformance
inselectivityandrange.Thenarrowopeningangle(4,9°at30kHz)andtheincreased
sourcelevel(3dB)makestheSU90averypowerfulandhighresolutionlowfrequency
sonar.ThenarrowbeammakestheSU90evenmoreidealforsearchingshcloseto
thebottomorclosetothesurfaceatlongranges.Italsoprovidesafarbettervertical
viewwithless“bottomclimbing”thatisseenonsonarswithawiderbeam.
Greatemphasishasbeenplacedongivingthebestpossiblesonarpresentationsona
highresolutioncolourdisplay.
TheSU90ProcessorUnitiscontrolledbyMicrosoft’sWindows
®
operatingsystem,
whichresultinaexiblechoiceofpresentationmodesforalargerangeofuser
applications.Thesignalprocessingandbeamformingisperformedinafastdigital
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