Detection And Signal Processing Technical Realization(1st Edition)

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Book Price $0 : Thewritingofthisbookhasbeeninspiredbytheexperienceofteachinga CourseonDetectionandSignalProcessingtograduatestudentsoveraperiod Ofmanyyears. Itwasstrikingthatstudentswerenotonlyfascinatedbythe Variousdetectionprinciplesandtechnicalperformancesofpracticalsystems, Butalsobytheprofessionalismoftheinvolved Typical Physicalengine- Ing. Usuallystudentsarethoroughlytaughtindi?erentcoursesofphysics, Whicharemostlystudiedasisolated?elds. Thecourseondetectionands- Nalprocessingisbasedontypicalresultsthatwereestablishedindi?erent Disciplines Like Optics, Solid State Physics, Thermodynamics, Mathematical Statistics, Fouriertransforms, Andelectroniccircuitry. Theirsimultaneousand Interdependentapplicationbroadenstheinsightofmutualrelationsinthev- Ious?elds. Forinstancethe?uctuationsofthermalbackgroundradiationcan Bederivedeitherwiththeblackbodytheoryorindependentlywithther- Dynamicstoarriveatthesameresult. AlsotheappliedFourierrelationsin Thefrequencyandtimedomainsarenolongerabstractmathematicalman- Ulationsbutpracticaltoolsandprobablyeasiertounderstandintheapplied Technique. Estimatesoftheorderofmagnitudeswithcomparisonofrelevant Physicale?ectsnecessarybydesigningadeviceareveryinstructive. Ingeneral Theachievementsofvariousdisciplinesarebroughttogethertodesignandto Evaluatequantitativelythetechnicalperformancesofdetectiontechniques. Thustheinterestfordetectionandsignalprocessingisbothtolearnthe Knowledgefordesigningpracticaldetectionsystemsandtogetacquainted Withthethinkingofphysicalengineering. The?rstpartofthebookisdevotedtonoisephenomenaandradiation Detectors. Fundamentaldescriptionswithquantitativeanalysesoftheund- Lyingphysicalprocessesofbothdetectorsandaccompanyingnoiseleadto Understandthepotentialswithrespecttosensitivityandoperatingfrequency Domain. Thesecondpartdealswithampli?cationproblemsandtherecovery Ofrepetitivesignalsburiedinnoise. Thelastpartisdevotedtosolvingthe Problemsconnectedwithreachingtheultimatedetectionlimitorquantum Limit. Thisisdoneforheterodynedetectionandphotoncounting. Although VIII Preface Heterodynedetectionyieldstheultimatesensitivity, Itsspatialmodesel- Tivityand, Ingeneral, Thelowspectralpowerdensityofthesignalrequire Sophisticatedprovisions. Thisisdiscussedindetail. Theinherentproblemsare Analyzedandappropriatetechnicalsolutionsaredescribedtoreachtheul- Matesensitivityfordetectingincoherentradiationandcommunicationsignals ThatarerandomlyDopplershifted. Theresultsareillustratedwithexamples Ofspacecommunication. Hengelo(O), January2006 W. J. Witteman Contents 1 RandomFluctuations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 2 ThermalNoiseofResistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 3 ShotNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 3. 1 SpectralDistribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 3. 2 Photons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 4 FlickerNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 5 Generation-RecombinationNoise. . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 6 ThermalRadiationandItsFluctuations. . . . . . . . . . . . . . . . . . . . 13 1. 7 TemperatureFluctuationsofSmallBodies. . . . . . . . . . . . . . . . . . 18 1. 7. 1 AbsorptionandEmissionFluctuations. . . . See more