What is more, the camera used in the far infrared, passive system is about the size of a paperback book, while the near infrared's CCD footprint is about the size of a postage stamp.
What is more, the camera used in the far infrared, passive system is about the size of a paperback book, while the near infrared's CCD footprint is about the size of a postage stamp.
而且，远红外系统的相机有一本书那么大，相比之下，近红外系统的摄像头只有邮票那么大。