小卫星CCD数据在土地利用研究中的应用评价

为了验证新型小卫星“北京一号”CCD数据在土地利用研究领域所具有的实用性和效果,应用三种不同的计算机自动分类方法对研究区域进行了土地利用分类,并对分类精度进行了评价。结果表明:应用最大似然法、Mahalanobis距离法和最小距离法,分类总体精度分别达到了89．45％,84．82％和73．93％;。得出结论:“北京一号”小卫星CCD数据质量较好,选择合适的方法,能够得到较为理想的分类结果,数据能够满足中等比例尺成图要求,可以在土地利用研究领域广泛使用,成为遥感数据更新的新数据源。

Application of "Micro-Satellite" ccd data in land use research

In order to demonstrate the usability and effect of "Beijing 1 Micro-Satellite" data in the land use research field, three different methods are used to carry at the land use classification, simultaneously classification precision appraisal is finished, The result indicates that, using maximum likelihood, mahalanobis distance and minimum distance, the overall classification precision is respectively 89.45%, 84.82% and 73.93%.Thus the conclusion is drawn that "Beijing 1 Micro-Satellite" CCD data quality is fine, and choosing right methods, the ideal classification results can be gained. Data can satisfy medium scale map request, which can be widely used in land use field, and become one kind of new data source for remote sensing data renews.