SPOT卫星技术参数英文版.pdf
Spot satellite technical data Ask us for the Earth TECHNICAL 1/4 Spot satellite technical data 2/4 SPOT 5SPOT 4SPOT 1,2&3Launch dateMay 4,2002March 24,1998SPOT 1 February 22,1986 SPOT 2 January 22,1990 SPOT 3 September 26,1993Launch vehicleAriane 2/3Nominal lifetime3 yearsDeorbitationIn orbitIn orbitSPOT 1 November 17,2003 SPOT 2 July 30,2009SPOT 3 November 1996 (end of life)OrbitLocal Equator crossing time(descending)Altitude at EquatorInclinationVelocityAltitude controlEarth-pointing and yaw-axis controlled(to compensate for effects due to Earths rotation)Orbital periodOrbital cycleTotal mass3,000 kg2,760 kg1,800 kgDimensions3.1 x 3.1 x 5.7 m2 x 2 x 5.6 m2 x 2 x 4.5 mSolar array(end of life)2,400 W2,100 W1,100 WRecording capacity90-Gbit solid-state memory (210 images with an average decompressed file size of 144 Mb)Two 120-Gbits recorders plus 9-Gbit solid-state memory (560 images on each recorder +40 images,with an average decompressed file size of 36 Mb)Two 60-Gbit recorders (280 images on each with an average decompressed file size of 36 Mb)Onboard image processingUp to 5 images acquired simultaneously,2 downlinked in real time AND 3 stored onboard using a 2.6 compression ratio(DCT)Two images acquired simultaneously,then downlinked OR recorded using a 1.3 compression ratio(DPCM)Two images acquired simultaneously,then downlinked OR recorded using a 1.3 compression ratio(DPCM,panchromatic imagery only)Image telemetry link(8 GHz)2 x 50 Mb/s822 km98,726 days50 Mb/sGeneral features101.4 minutes5 years7.4 km/sEarth-pointingAriane 4Sun-synchronous10:30 a.m.3/4 Spot satellite technical data*Location accuracy is evaluated on the basis of a statistic calculated from a large number of scenes acquired from September 2003,across the globe.SPOT 5SPOT 4Passenger instrumentVEGETATION 2VEGETATION 1Spectral bandsElectromagnetic spectrumResolutionImaging swathImage dynamicsRevisit intervalVEGETATION Instrument4B0:0.45 0.52 m B2:0.61 0.68 m B3:0.78 0.89 m B4:1.58 1.75 m2.250 km1 day1,000 m10 bitsSPOT 5SPOT 4SPOT 1,2&3Instruments2 HRGs2 HRVIRs2 HRVsSpectral bands and resolution2 panchromatic(5 m),combined to generate a 2.5-metre product 3 multispectral(10 m)1 short-wave infrared(20 m)1 panchromatic(10 m)3 multispectral(20 m)1 short-wave infrared(20 m)1 panchromatic(10 m)3 multispectral(20 m)Spectral rangeP:0,48 0.71 m B1(green):0.50 0.59 m B2(red):0.61 0.68 m B3(NIR):0.78 0.89 m B4(SWIR):1.58 1.75 mM:0.61 0.68 m B1(green):0.50 0.59 m B2(red):0.61 0.68 m B3(NIR):0.78 0.89 m B4(SWIR):1.58 1.75 mP:0.51 0.73 m B1(green):0.50 0.59 m B2(red):0.61 0.68 m B3(NIR):0.78 0.89 mImaging swathImage dynamicsAbsolute location accuracy(no ground control points,flat terrain)30 m(1)*Relative internal distance accuracy(level 1B)ProgrammableAngle of incidenceAverage revisit interval over a 26-day orbital cycle,depending on latitude60 km x 60 km to 80 km350 m(1)*Yes2 to 3 daysHigh-Resolution Instruments -31.068 bits0.5 x 10(1)Spot satellite technical data FranceFrance,Australia,Brazil,China,Japan,Peru,Singapore,United States 09/2010-Spot Image-All rights reserved in all countries Satellite images:Cnes 2005 Distribution Spot Image Product features are given as an indication only and are subject to change without notice.*Location accuracy is evaluated on the basis of a statistic calculated from a large number of scenes acquired from September 2003,across the globe.Committed to delivering you continuous Spot Image quality service To give your projects every chance of succeeding,Spot Image,the commercial operator of the SPOT satellites for more than 20 years,is once again extending its portfolio of products and services.In particular,it is preparing to offer new 50-cm products from Pliades 1&2Pliades 1&2,and looking ahead to SPOT 6&7 SPOT 6&7 to pursue the success of SPOT 5.Our domain experts and sales team are on hand to help you choose the products and services you need,and to offer advice on your projects.More informationMore information: 3D view-Los Angeles,USA-06/2002 4/4 SPOT 4SPOT 1,2&3InstrumentHRS along-track stereoviewingHRG stereoviewing capability across trackHRVIR stereoviewing capability across trackHRV stereoviewing capability across trackSpectral bands and resolution1 panchromatic(10 m)(resampled every 5 m along track)10 m across track,5 m along track2 panchromatic(5 m)combined to generate a 2.5-metre product 3 multispectral(10 m)1 short-wave infrared(20 m)1 panchromatic(10 m)3 multispectral(20 m)1 short-wave infrared(20 m)1 panchromatic(10 m)3 multispectral(20 m)Spectral rangeP:0.49 0.69 mP:0.48 0.71 m B1:0.50 0.59 m B2:0.61 0.68 m B3:0.78 0.89 m B4:1.58 1.75 mM:0.61 0.68 m B1:0.50 0.59 m B2:0.61 0.68 m B3:0.78 0.89 m B4:1.58 1.75 mP:0.51 0.73 m B1:0.50 0.59 m B2:0.61 0.68 m B3:0.78 0.89 mImaging swath600 km x 120 kmImage dynamicsBase/height ratio(B/H)0,84(20)Absolute location accuracy(no ground control points,flat terrain)10 m(1)*30 m(1)*Time between two images90 seconds(simultaneous)SPOT 5Stereoscopic Instruments 8 bits0.5 to 1.1350 m(1)*Variable60 km x 60 km to 80 km
