高分辨率的地球资源卫星有哪些?各有什么特点?高光谱卫星有什么特点?

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  完善个人资料哒 2008-04-16 00:00:00

  您好！ 十月二十九日下午，ZG国防科学技术工业委员会与国土资源部签署协议，后者正式成为中巴地球资源卫星○二B星主用户，图为双方官员共同展示中巴地球资源卫星○二B星所拍摄的北京地区影像图。专家介绍说，该星除可以提供二十米和二百五十八米分辨率多光谱数据外，还可提供二点三六米高分辨率的全色数据。

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  xgcok899 2008-04-16 00:00:00

  spot-5比较好！

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  浅笑_花非花 2012-05-13 00:00:00

  美国Landsat卫星：TM1-5、TM7波段空间分辨率为30米，热红外波段TM6分辨率为120米；ETM+1-5，、ETM+7波段分辨率为30米，热红外波段ETM+6为60米，ETM+PAN全色波段为15米。可以用全色波段数据对低分辨影像做数据融合处理。 法国SPOT：多星运作体系，装有两台并排放置的相机，实现了立体相对的成像要求。SPOT1~SPOT3，全色波段分辨率为10米，3个多光谱波段为20米；SPOT4，1个全色波段分辨率为10米，三个多光谱波段为20米，一个短波红外波段为20米；SPOT5，2景全色波段影像为5米，通过它们可以生成一景2.5米的影像，三个多光谱波段为10米，一个短波红外波段为10米。 印度资源卫星数据（IRS）：全色波段数据，CCD推扫方式成像，地面分辨率高达5.8米；LISS数据，可见光与近红外波段地面分辨率为23.5米，短波红外波段为70米； 中巴资源卫星：CCD相机成像的影像，星下点分辨率为19.5米；其他的还有78、156、256米；质量不咋地。 日本卫星分辨率18*18米。 IKONOS-2，全色1米，多光谱4米。 快鸟数据分辨率为2.44米和0.61米。 高光谱卫星，波段数目多，波段宽度窄，波段分布连续，光谱分辨率高。图谱合一，实现了空间信息和光谱信息的有机结合。

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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 补：美DigitalGlobel (EarthWatch)公司的QuickBird（快鸟）图像，波段分布与IKONOS同，但pan和multispectral分辨率分别达0.6和2.4米，为民用卫星之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) 类似 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) 增加一个1.58 to 1.75 μm的近红外波段；See table 3-15. 补：SPOT 5—— Panchromatic 波段达2.5米分辨率。 补：我国资源一号卫星CBERS 是不是很专业啊

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