因为水、植被及矿藏各有其独特的多光谱光图像，所以，扫描器能辨认出地球的不同特征。

Since water, vegetation, and mineral each have unique identifying patterns in multispectral light, the scanner can identify differing features of the earth.

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通常图像获取的方法有飞点扫描器、电视摄像机(摄像头)、扫描仪和遥感设备如红外扫描仪、多光谱扫描仪等。

Image acquisition methods are usually flying spot scanners, television cameras (cameras), scanners and remote sensing equipment such as infrared scanners, multispectral scanners.

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