xx光电销售计划书

1.ParametersIntroduction发射时间：20140403发射地点：法国圭亚那库鲁，轨道：Polar，轨道高度693公里重访时间：六天(sentinel-1A和sentinel-1B单卫星12天)设计寿命：七岁卫星：长2.8米，宽2.5米，2×长达10米的太阳能电池阵列和一个12米长4米高的雷达天线质量：2300公斤（含130公斤燃料）波段：C波段合成孔径雷达（SAR）5.405GHz侧视方式：右视极化方式：-hh-hv或HH极化的极性环境监测，海冰区-vv-vh或VV极化所有其他观测区（与波罗的海的一个例外hh-hv观察部分在北方的冬天，在下行轨道）。Asageneralprinciple,thepolarisationschemefollowsthefollowinglogic:-HH-HVorHHpolarizationforthemonitoringofpolarenvironments,sea-icezones-VV-VHorVVpolarizationforallotherobservationzones(withanexceptionfortheBalticSeaobservedpartiallyinHH-HVduringnorthernwinter,ondescendingorbits).分辨率_不同操作模式（Operationalmodes）：干涉宽幅（IM）250公里5×20米分辨率Wavemodeacquisitions（WM）imagesof20×20kmand5×5mresolution(at100kmintervals)条带模式（SM）at80kmswathand5×5mresolution超宽幅模式（EM）of400kmand20×40mresolution接收站：SAR数据：斯瓦尔巴群岛，挪威；新马泰，意大利；西班牙马斯帕洛马斯2.任务以及主要应用该任务提供了一个对地球的连续雷达观测的独立的可操作能力。Sentinel被设计成基于长时间序列能够为运行服务和应用提供增强的访问频率，覆盖，及时性和可靠性。该任务将提供一个可操作的干涉测量能力，通过严格的要求放置在态度的准确性，态度和轨道的知识，和数据的定时精度。Theconstellationwillcovertheentireworld’slandmassesonabi-weeklybasis,sea-icezones,Europe'scoastalzonesandshippingroutesonadailybasisandopenoceancontinuouslybywaveimagettes.，海冰区，欧洲的沿海地带和航线上每天和开放的海洋连续波imagettes。哨兵的SAR仪器短重访时间将大大提高user的能力和提供数据定期和系统的海上和地面监测，应急响应，气候变化和安全。主要用途：监测海冰、溢油、海洋风和海浪、土地利用变化、土地变形等，并应对洪水和地震等突发事件（Mainapplications:Monitoringseaice,oilspills,marinewinds&waves,land-usechange,landdeformationamongothers,andtorespondtoemergenciessuchasfloodsandearthquakes）3.不同工作模式介绍（Operationalmodes）四种工作模式：干涉宽幅（IM）、Wavemodeacquisitions（WM）、条带模式（SM）、超宽幅模式（EM）主要有两种工作模式：干涉宽幅（IM）以及Wavemodeacquisitions（WM）（Theradaroperatesintwomainmodes:InterferometricWideswathandWave.）关于干涉宽幅的介绍：干涉宽幅模式，是默认模式（对地观测），250公里的扫描宽度以及5×20米的分辨率。这种模式的图像用了theTerrainObservationwithProgressiveScansSAR–orTOPSAR.。用这种技术，雷达波束在一个条带上扫描来回三次（称为sub-swath），使其可以获得质量很高并且均匀的sar图像。InterferometricWideswathmode,thedefaultmodeoverland,hasaswathwidthof250kmandagroundresolutionof5x20m.Thismodeimagesinthreesub-swathsusingtheTerrainObservationwithProgressiveScansSAR–orTOPSAR.Withthistechnique,theradarbeamscansbackandforththreetimeswithinasingleswath(calledsub-swaths),resultinginahigherqualityandhomogeneousimagethroughouttheswath.Wavemodeacquisitions，可以用来确定方向，海洋里波长和海波高度。是一种swath比条带小（calledvignettes）的扫描模式20×20公里100kmWavemodeacquisitions–whichcanhelptodeterminethedirection,wavelengthandheightsofwavesontheopenoceans–are20x20km,acquiredalternatelyontwodifferentincidenceanglesevery100km.Wave(WV)-Dataisacquiredinsmallstripmapscenescalledvignettes,situatedatregularintervalsof100kmalongtrack.Thevignettesareacquiredbyalternating,acquiringonevignetteatanearrangeincidenceanglewhilethenextvignetteisacquiredatafarrangeincidenceangle.WVisSENTINEL-1'soperationalmodeoveropenocean.另外两个模式：条带（SM）和超宽带幅模式（EW）。条带模式（SM）延续了ERS和ENVISAT数据，提供一个5×5米分辨率的一个狭窄的80公里幅宽。Stripmap(SM).ThisisastandardSARstripmapimagingmodewherethegroundswathisilluminatedwithacontinuoussequenceofpulsesandwiththeantennabeampointingtoafixedazimuthandelevationangle.超宽幅模式（extra）是用于海上，冰和北极区的服务。特点：覆盖范围广、短重访时间。这种模式的工作类似于干涉宽幅模式采用TOPSAR技术，导致在一个较低的分辨率（20x40m）。超宽幅模式也可以用于干涉。4.不同级产品说明Level-0TheSARLevel-0productsconsistofthesequenceofFlexibleDynamicBlockAdaptiveQuantization(FDBAQ)compressedunfocusedSARrawdata.Forthedatatobeusable,itwillneedtobedecompressedandprocessedusingfocusingsoftware.Level-1Level-1dataarethegenerallyavailableproductsintendedformostdatausers.Level-1productsareproducedasSingleLookComplex(SLC)andGroundRangeDetected(GRD).Level-1SingleLookComplex(SLC)productsconsistoffocusedSARdatageo-referencedusingorbitandattitudedatafromthesatelliteandprovidedinzero-Dopplerslant-rangegeometry.TheproductsincludeasinglelookineachdimensionusingthefullTXsignalbandwidthandconsistofcomplexsamplespreservingthephaseinformation.Level-1GroundRangeDetected(GRD)productsconsistoffocusedSARdatathathasbeendetected,multi-lookedandprojectedtogroundrangeusinganEarthellipsoidmodel.Phaseinformationislost.Theresultingproducthasapproximatelysquareresolutionpixelsandsquarepixelspacingwithreducedspeckleatthecostofreducedgeometricresolution.GRDproductscanbeinoneofthreeresolutions:FullResolution(FR)HighResolution(HR)MediumResolution(MR).Theresolutionisdependentupontheamountofmulti-lookingperformed.Level-1GRDproductsareavailableinMRandHRforIWandEWmodes,MRforWVmodeandMR,HRandFRforSMmode.Level-2Level-2OCNproductsincludecomponentsforOceanSwellspectra(OSW)providingcontinuitywithERSandASARWVandtwonewcomponents:OceanWindFields(OWI)andSurfaceRadialVelocities(RVL).TheOSWisatwo-dimensionaloceansurfaceswellspectrumandincludesanestimateofthewindspeedanddirectionperswellspectrum.TheOSWisgeneratedfromStripmapandWavemodesonly.ForStripmapmode,therearemultiplespectraderivedfrominternallygeneratedLevel-1SLCimages.ForWavemode,thereisonespectrumpervignette.TheOWIisagroundrangegriddedestimateofthesurfacewindspeedanddirectionat10mabovethesurfacederivedfrominternallygeneratedLevel-1GRDimagesofSM,IWorEWmodes.TheRVLisagroundrangegriddeddifferencebetweenthemeasuredLevel-2DopplergridandtheLevel-1calculatedgeometricalDoppler.