In this paper evolution of ancient lake in Taiyuan basin and changes of ecological environment were studied by optical enhancement of remote sensing image, geoscience analysis and historical records.
本文采取遥感图像光学增强、地学分析和历史资料论证的方法，研究了太原断陷盆地古湖泊的演变与生态环境的变化。
Having experienced the ways of field survey on the spot and eyed-interpretation on optical image, the survey technique on soil erosion entered a new stage of using digital remote sensing imagery.
土壤侵蚀调查技术经历了人工实地填图调查、航(卫)片目视判读调查之后，目前已进入数字遥感影像调查的新阶段。
Due to the far imaging distance of optical remote sensing and the limitation of the physical size of CCD, the resolution of the remote sensing image is usually low.
由于光学遥感成像的距离较远和CCD物理尺寸的限制，获得的图像分辨率都比较低。
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