CBERS-02B星数据质量评估及土地调查监测应用潜力分析

Evaluation on CBERS - 02B Data Quality and Analysis on Application Potential of Land Survey & Monitoring

研究目的:对CBERS-02B星进行数据应用评价。研究方法:定性与定量评价相结合。研究结果:CBERS-02B星HR数据几何纠正误差约为8—11 m;建设用地、耕地解译及新增建设用地检测属性正确率约80%,提取的变化图斑平均相对面积误差约为10%。研究结论:CCD影像可用于1:100000尺度土地宏观遥感监测;若不考虑数据获取能力,HR和CCD融合影像可满足中小尺度土地利用动态遥感监测精度要求。

The purpose of the study is to evaluate CBERS - 02B data quality. Methods of qualitative and quantitative analysis were employed. The results indicate that, the position error of HR data after geo-rectification is about 8-11m. The attribute accuracy for construction land, cultivated land and newly-increased construction land is about 80% while the average relative area error of extracted change plots is about 10%. It is concluded that CCD data of CBERS - 02B can be used to monitor land dynamic change at macro scale of 1：100,000. HR and CCD fused image can be used to monitor land dynamic change at small or medium scale if the data acquisition capacity is not considered.