标签: aperture

CAM350APERTURE格式说明

Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.CHAPTERSpecialImagingTechniques25Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.SpatialResolutionSupposewewanttocomparetwoimagings……

Abstract:ThisapplicationnoteclarifiestheoperationandapplicationsoftheMaximJitterCalculatorprovidedaspartoftheADCdesigntools.ThisdocumentassumesthatthereaderhasabasicunderstandingofterminologyandconceptsrelatedtoADCs(Formoreinformation,seeapplicationnote641,"ADCandDACGlossary.")Maxim>AppNotes>A/DandD/AConversion/SamplingCircuitsHigh-SpeedSignalProcessingKeywords:ADCApertureJitterCalculatorSNRSep08,2009APPLICATIONNOTE4466ApertureJitterCalculatorforADCsAbstract:ThisapplicationnoteclarifiestheoperationandapplicationsoftheMaximJitterCalculatorprovidedaspartoftheADCdesigntools.ThisdocumentassumesthatthereaderhasabasicunderstandingofterminologyandconceptsrelatedtoADCs(Formoreinformation,seeapplicationnote641,"ADCandDACGlossary.")IntroductionTheMaximJitterCalculatorisintendedforusewithADCsthathaveaclock-based,input-samplingscheme(sample/track-and-hold(T/H)front-end)foracquisitionofdynamicinputsignals……

Abstract:TheglossaryprovidesadetaileddescriptionofACperformancetermsrelatedtohigh-speeddataconverterssuchasADCsandDACs.Italsogivessomeinsightintothetestconditionstheseparametersarespecifiedfor.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSHIGH-SPEEDSIGNALPROCESSINGKeywords:aliasing,aperture,INL,crosstalk,coherentsampling,common-mode,DNL,dithering,ENOB,flash,Mar22,2001frequencybin,glitchenergy,latency,monotonicity,intermodulation,SNR,NPR,quantization,SFDR,SINAD,spectralleakage,THD,VSWRAPPLICATIONNOTE740GlossaryofFrequentlyUsedHigh-SpeedDataConverterTermsAbstract:TheglossaryprovidesadetaileddescriptionofACperformancetermsrelatedtohigh-speeddataconverterssuchasADCsandDACs.Italsogivessomeinsightintothetestconditionstheseparametersarespecifiedfor.Aliasing/Anti-AliasingInsamplingtheory,aninputsignal(fIN)mustbesampledwithatleasttwiceitsfrequency(Nyquistcrit……

SARSyntheticApertureRadarSheet1of18SARSyntheticApertureRadarWhyusemicrowavefrequencies?-atmosphericattenuationislowatmicrowavefrequencies,particularly1-10GHz,apartfromresonancesduetooxygenandwatermolecules.-microwavesignalswillpenetratecloudandfog,incontrasttovisibleradiation.-microwavescancontinuouslymonitorploarregionsandtropicalforeststhatareoftenindarknessorcoveredinclouds.-SARistobeusedtomonitornaturaldisasters-floods,forestfires,earthquakesetcthatareoftenaccompaniedbypooropticalvisibility.-fairlynarrowbeamscanbeobtainedwithresonablysizedantennastogiveacceptableresolution.FeaturesofSAR-alargeeffectiveantennaapertureisobtainedbymountingtheantennaonamovingplatform-anaircraftorasatellite.-reso……