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  完善個(gè)人資料噠 2008-04-16 00:00:00

  您好！ 十月二十九日下午，ZG國防科學(xué)技術(shù)工業(yè)委員會與國土資源部簽署協(xié)議，后者正式成為中巴地球資源衛(wèi)星○二B星主用戶，圖為雙方官員共同展示中巴地球資源衛(wèi)星○二B星所拍攝的北京地區(qū)影像圖。專家介紹說，該星除可以提供二十米和二百五十八米分辨率多光譜數(shù)據(jù)外，還可提供二點(diǎn)三六米高分辨率的全色數(shù)據(jù)。

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  xgcok899 2008-04-16 00:00:00

  spot-5比較好！

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  淺笑_花非花 2012-05-13 00:00:00

  美國Landsat衛(wèi)星：TM1-5、TM7波段空間分辨率為30米，熱紅外波段TM6分辨率為120米；ETM+1-5，、ETM+7波段分辨率為30米，熱紅外波段ETM+6為60米，ETM+PAN全色波段為15米?？梢杂萌ǘ螖?shù)據(jù)對低分辨影像做數(shù)據(jù)融合處理。 法國SPOT：多星運(yùn)作體系，裝有兩臺并排放置的相機(jī)，實(shí)現(xiàn)了立體相對的成像要求。SPOT1~SPOT3，全色波段分辨率為10米，3個(gè)多光譜波段為20米；SPOT4，1個(gè)全色波段分辨率為10米，三個(gè)多光譜波段為20米，一個(gè)短波紅外波段為20米；SPOT5，2景全色波段影像為5米，通過它們可以生成一景2.5米的影像，三個(gè)多光譜波段為10米，一個(gè)短波紅外波段為10米。 印度資源衛(wèi)星數(shù)據(jù)（IRS）：全色波段數(shù)據(jù)，CCD推掃方式成像，地面分辨率高達(dá)5.8米；LISS數(shù)據(jù)，可見光與近紅外波段地面分辨率為23.5米，短波紅外波段為70米； 中巴資源衛(wèi)星：CCD相機(jī)成像的影像，星下點(diǎn)分辨率為19.5米；其他的還有78、156、256米；質(zhì)量不咋地。 日本衛(wèi)星分辨率18*18米。 IKONOS-2，全色1米，多光譜4米。 快鳥數(shù)據(jù)分辨率為2.44米和0.61米。 高光譜衛(wèi)星，波段數(shù)目多，波段寬度窄，波段分布連續(xù)，光譜分辨率高。圖譜合一，實(shí)現(xiàn)了空間信息和光譜信息的有機(jī)結(jié)合。

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  yepanpanpan 2008-04-20 00:00:00

  Satellite System A satellite system is composed of a scanner with sensors and a satellite platform. The sensors are made up of detectors. （See the detailed in text） Satellite Characteristics The U. S. Landsat and the French SPOT satellites are two important data acquisition satellites. They have several characteristics in common: • Both scanners can produce nadir views. • They have sun-synchronous orbits， meaning that they rotate around the Earth at the same rate as the Earth rotates on its axis， so data are always collected at the same local time of day over the same region. • They both record electromagnetic radiation in one or more bands. Multiband data are referred to as multispectral imagery. Single band， or monochrome， imagery is called panchromatic. Figure 3-1 Multispectral Imagery Comparison IKONOS（was launched in September of 1999） The resolution of the panchromatic sensor is 1 m. The resolution of the multispectral scanner is 4 m. The swath width is 13 km at nadir. Table 3-4: IKONOS Bands and Wavelengths 補(bǔ)：美DigitalGlobel (EarthWatch)公司的QuickBird（快鳥）圖像，波段分布與IKONOS同，但pan和multispectral分辨率分別達(dá)0.6和2.4米，為民用衛(wèi)星之Z。 IRS (Indian Remote Sensing Satellite) Landsat 1-5 (See the histoty in text) Landsats 1， 2， and 3 are no longer operating， but Landsats 4 and 5 are still in orbit gathering data. Landsats 1， 2， and 3 gathered Multispectral Scanner (MSS) data and Landsats 4 and 5 collect MSS and TM data. MSS (Multispectral Scanner) MSS data are widely used for general geologic studies as well as vegetation inventories. Table 3-8: MSS Bands and Wavelengths TM （Thematic Mapper） The TM scanner is a multispectral scanning system much like the MSS. TM has higher spatial， spectral， and radiometric resolution than MSS. The spatial resolution of TM is 28.5 × 28.5 m for all bands except the thermal (band 6)， which has a spatial resolution of 120 × 120 m. Table 3-9: TM Bands and Wavelengths Landsat 7 launched in 1999， uses Enhanced Thematic Mapper Plus (ETM+) to observe the Earth. Table 3-10: Landsat 7 Characteristics NLAPS NOAA Polar Orbiter Data AVHRR See Table 3-11: AVHRR Bands and Wavelengths， also Figure 3-1. OrbView-3 (US) 類似 IKONOS. SeaWiFS（Sea-viewing Wide Field-of-View Sensor） SPOT The sensors operate in two modes， multispectral（20m） and panchromatic (10m). Also see Figure 3-1. Panchromatic XS (see table 3-14: SPOT XS Bands and Wavelengths) SPOT 4 (was launched in 1998) 增加一個(gè)1.58 to 1.75 μm的近紅外波段；See table 3-15. 補(bǔ)：SPOT 5—— Panchromatic 波段達(dá)2.5米分辨率。 補(bǔ)：我國資源一號衛(wèi)星CBERS 是不是很專業(yè)啊

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