JAVELIN一CLOSECOMBATMISSILESYSTEMMEDIUM:HEADQUARTERS,DEPARTMENTOFTHEARMY_部分3.docx
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1、Eyepiece5-32.Thegunnerviewsthedaysightimagesthroughtheeyepiece.StatusDisplay5-33.ThedaysightprovidesthegunnerwiththedayFOV.ThedayFOVisusedforscanninglargeareaswhilewaitingfortheNVStocool.WhilethedayFOViseffectiveingoodvisibilityconditions,thegunnerwillbeabletodistinguishverylittledetailaboutobjectss
2、eenduringperiodsoflimitedvisibility(Figure5-15).CLEARTARGETOBSCUREDTARGETFigure5-15.Exampledaysightimagesclearandrainy.NightVisionSight5-34.TheNVS(Figure5-16)convertsIRtargetimagesintovisibletargetimages.Thisallowsthegunnertoseetargetsinwideandnarrowfieldsofviewduringperiodsoflimitedvisibility.TheNV
3、Sconsistsofthe一QNVSlens.QDDC.QVideodisplay.找Flipperminor.*Statusdisplay.对Eyepiece.Chapter 5Figure5-16.NightvisionsightNightVisionSightLens5-35.WheninWFOVorNFOV,theNVSlens(Figure5-16)focusestheincoming1RlightontotheDDC.WideField-of-View5-36.TheWFOV(Figure5-17A)providesthegunnerwith4xmagnificationofth
4、etargetscene.Withanareaofcoverageapproximately6x4,WFOVcoversawideareasothatthegunnercanscanalargegeneraltargetscenetodetectpotentialtargets.However,thegunnerwillbeabletodistinguishverylittledetailaboutanygivenobject.Asaresult,WFOVisusedonlyforgeneralsurveillanceandtargetdetection.NarrowField-of-View
5、5-37.TheNFOV(Figure5-17B)providesthegunnerwithI2xmagnificationofthetargetscene.Withanareaofcoverageapproximately2x1.5,NFOVcoversasmallerareathantheWFOV,butallowsthegunnertoseepotentialtargetswithgreaterdetail.Therefore,NFOVisusedprimarilytoclassifyandrecognizetargets,butitcanalsobeusedforBDA.Figure5
6、-17.Nightvisionsightfieldsofview.DetectorDewarCooler5-# FM 3-22.37 20 March 20085-38.TheDDC(Figure5-18)convertstheIRtargetimagesintoelectricalsignals,whichpassthroughasignalprocessortothedisplay.DEWARCOOLERFigure5-18.Detectordewarcooler.VideoDisplay5-39.Thevideodisplayconvertstheelectricalsignalsfro
7、mtheDDCintovisibleimages.MinorsinsidetheCLUreflecttheimagessotheyappeartocomefromtheeyepiece.FlipperMinor5-40.TheflippermirrorallowsthegunnertoswitchbetweenthedaysightandtheNVSbypressingtheSGTSELswitch.ThisprovidestheJavelinwithitsintegrateddayandnightsightcapability.DaysightPosition5-41.Theflipperm
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