中巴资源卫星数据(CBERS-02)在土地调查中的应用

研究目的:以CBERS-02 CCD数据作为土地利用遥感调查信息源开展应用研究。研究方法:对数据质量进行综合分析、方法比较和实证研究。研究结果:(1)通过对CBERS-02 CCD数据经绝对辐射校正和大气订正,图像质量得到较好地改善,各波段能量相对趋于均衡并能客观反映土地覆被真实状况。(2)通过开展标准分幅正射影像图制作及精度评价,显示CCD图像能够满足1∶5万和1∶10万基本比例尺数字影像图制图要求。(3)通过对中巴数据的图像处理、影像分类与信息自动提取方法研究,分类结果均达到了较好的精度要求。研究结论:随着CBERS-02数据质量不断改善,在宏观尺度上,中巴卫星遥感数据在用于土地调查及提高土地管理方面,将会发挥重要作用。

Application Research of CBERS-02 Data in Land-use Survey

The purpose of this study is to take CBERS-02 data as information source to make application study for land use survey through RS.Methods of data quality analysis,comparison,and case study were employed.The results indicate that the data quality could be quite improved by the absolute calibration,while the spectral energy of different bands tends to be balanced and can reflect the true state of ground surface.The CCD image could satisfy the accuracy requirements for mapping at scales of 1:50000 and 1:100000 by ortho-rectification.The reclassification results have achieved a fairly high accuracy through the study on CBERS-02 image processing and classification,and automatic information abstraction technique.With the improvement of CBERS-02 data quality,it will play a more and more important role in macro land survey and management.