Raymarine LIGHTHOUSE 4 - Doppler Radar Overview; Doppler Mode

Onceconfigureselect[Back].
Ifrequired,youcanalsoadjusttheGuardzonesensitivity
.Sensitivity
determinesthesizeatwhichobjectstriggerthealarm.
20.13DopplerRadaroverview
DopplerRadartechnologymakesiteasiertotrackmovingobjectswith
groundspeedexceeding3knots.
TheDopplerfunctionhighlightsobjectsontheRadardisplaythataremoving
towardsorawayfromthevessel(e.g.othervessels,butnotlandorbuoys,
forexample).Stationarytargetswillnotbehighlighted.
DopplerRadartechnologyisparticularlybeneficialinamarineenvironment,
wherepoorweatherconditionsandvisibilitycanmakeobjecttracking
challenging.WiththeintegrationofDopplerinformationontheRadardisplay,
theprocessofmatchingon-screenRadarreturnswithreal-worldobjects
becomesamuchsimplertask.
DopplerRadarworksbytransmittingamicrowavesignalwhichisthen
reflectedoffamovingobjectatadistance.Byanalyzinghowtheobject's
motionhasalteredthefrequencyofthereturnedsignal,theDopplerRadar
caninterpretthevariationtoprovidehighlyaccuratemeasurementsofan
object’sdirectionoftravel,relativetotheRadarscanner.
Dopplermode
WhenacompatibleRadarscannerisconnected,Dopplermodeisavailable.
Dopplermode—Enablinganddisabling
DopplermodeisenabledfromtheMainmenu:[Menu>Doppler].
WithDopplermodeenabled,thecolorpalettewillchangetothedefault
Dopplerpalette:AllapproachingtargetswillbecoloredRed,andalltargets
movingawayfromyouwillbecoloredGreen.
Dopplermodeissuspendedatrangesof12nmandgreater.TheRadarcolor
palettewillremainthesamebuttargetswillnotbehighlighted.
Dopplermode—Colorpalettes
DopplerhasuniquecolorpaletteswhichhelptoensuretheRedandGreen
DopplertargetsstandoutfromtheRadarimage.WhenDopplerisenabled,
thestandardcolorpalettesettingwillshowonlytheuniqueDopplercolor
palettes:[Dopplergrey],[Dopplerblue]and[Doppleryellow].A[FullColor]
optionisalsoavailable.
Note:
If‘Fullcolor’isselectedfortheRadarpalette,approachingtargetswill
appearPinkinsteadofRed.
R adarapp
297