Landsat卫星ETM传感器各波段的情况(精!!!)

 

  • TM1为蓝色波段,该波段位于水体衰减系数最小的的部位,对水的穿透力最大,用于判别水深,研究浅海水下地形,水体浑浊度等,进行水系及浅海域制图:

 

  • TM2为绿色波段,该波段位于绿色植物的反射峰附近,对健康茂盛的植物反射敏感,可以识别植物类别和评价植物生产力,对水体具有一定的穿透力,可反映水下地形,沙洲,沿岸沙坝等特征;

 

  • TM3为红波段,该波段位于叶绿素的主要吸收带,可用于区分植物类型,覆盖度,判断植物生长情况等,此外,该波段对裸露地表,植被,岩性,地体边界,构造,地貌,水文等特征均可提供丰富的植物信息;

 

  • TM4为近红外波段,该波段位于植物的高反射区,反映了大量植物信息,多用于植物的识别,分类,同时它位于水体的强吸收区,用于勾绘水体边界,识别与水有关的地质够造,地貌等;

 

  • TM5为短红外波段,该波段位于两个水体吸收带之间,对植物和土壤的水分含量敏感,从而提高了区分作物的能力,此外,在该波段上雪比云的反射率低,两者易于区分,TM5的信息量大两者易于区分;

 

  • TM6为热红外波段,该波段对地物热量辐射敏感,根据辐射热差异可用于作物与森林的区分,水体。岩石等地表特征的识别;

 

  • TM7为短波红外波段,波长比TM5要大,是专为地质调查追加的波段,该波段对岩石,特定矿物反射敏感,用于区分主要岩石类型,岩石水热蚀变,探测与交代岩石有关的粘土矿物等;

 

  • TM8为全色波段,该波段为Landsat-7新增加的波段,它覆盖的光谱范围较广,空间分辨率较其他波段高,因而多用于获取地面的几何特征。
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吾爱地理 » Landsat卫星ETM传感器各波段的情况(精!!!)
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