简要介绍了遥感( RS)正射影像的原理和特点,以及它在土地调查中的可行性和优越性,针对土地利用遥感分类中的影像预处理、影像融合、影像判读方法和土地利用现状信息如何更新等问题进行研究和探讨。%This paper briefly introduces the RS ( remote sensing) principle and characteristics of orthophoto , and its feasibility in the land survey and superiority , the land use classification in image preprocessing , image fusion, image interpretation method and land use how to update the status of information issues , some research and discussion .
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