星載高度計、散射計海面回波模擬器方案設(shè)計.pdf

1、中國科學(xué)院空間科學(xué)與應(yīng)用研究中心碩士學(xué)位論文星載高度計、散射計海面回波模擬器方案設(shè)計姓名：吳曉輝申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：張曉輝20050601AbstractThespaceborneAltimeterandScaRerometer(abrAlt&Scat)arctwokindsofveryimportantactivemicrowaveremotesensinginstrumentsandhavebeenpla

2、yinganimportantroleinoceanremotesensingThegroundtestandcalibrationforAlt&Scatisthenecessaryprocedureduringthedevelopmentofthedevices，andoceanReturnSignalSimulator(RSS)isthekeyinstrumentforitTheRSScanprovidethesimulatedoc

3、eanreturnsignalforthedevices，andrealizethesimulationonconditionofsystem—onorbit，whichcaneffectivelyensuretheirnormaloperationonorbitThemaincontentsinthisdissertationareasfollows：Tobeginwith，theAlt&Scat’Sdevelopmenthistor

4、yisbrieflyintroduced；theoperationalprinciplesofthedevicesandthebackscatteringmodeloftheoceanreturnsignalarestudiedinbriefSecondlytheoperationalprinciplesoftheRSSaredescribedindetail；theperformanceandrelevanttechniqueofva

5、riouskindsofRSSaresummarizedandanalyzedsystematicallyBasedontheabove，anewstylefullsignaloceanRSSschemeisdesignedforChineseAlt&ScatAmodularizedstructuraldesigningideaisadoptedinthescheme，whichresultsjnthehighuniversalityo

6、ftheschemeandthewideapplicationByemployingpulseregenerationtechnique，full—deramptechnique，high—speedDSPtechniqueandall—digitaloceanreturnsignalspectrumsynthesizingtechnique，theRSScanfulfillthereturnsignalsimulationofboth

7、thepointtargetandtheseasurfaceAimedatthescheme，themathematicalsimulationmodelofthesignalreceivingandtransmittingchannelisestablishedfirstlySecondlybasedonthedeepstudy011thestatisticalcharacteristicoftheoceanreturnsignali

8、nuseofthescientificdatareceivedfromtheChinesespaceborneAltimeteradigitalsynthesismethodofoceanreturnsignalsimulationispresentedThirdlywiththetoolofMatlabsoftware。thesystemsimulationiSconducted，whichprovesthefeasibilityan

9、deffectivityoftheRSSschemeFinallytheControl＆Di【百talReturnSignalSynthesisUnitisdesignedinthisdissertation，andthedesignverificationisconductedBymeansoftheexperimentsofthecapture&trackingtiming，pointtargetresponseandsea—sur