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中巴地球资源系列卫星经过多年运行,积累了大量的数据,其中多光谱数据尤其得到了广泛的应用。为了更好地利用CCD数据进行相关领域的应用,尤其是进行定量遥感分析,就如何对CCD影像进行表观反射率计算,以及如何应用图像光谱数据库数据进行图像分类识别展开了一些基础性研究。并以宁夏某地区为例,分别采用最大似然法和夹角余弦法进行了地物分类及分类结果对比分析。
After years of operation, China-Brazil Earth Resources Satellite series have accumulated a great deal of data, among which multispectral data have been widely used. In order to make better use of CCD data in related fields, especially for quantitative remote sensing analysis, some basic research is carried out on how to calculate the apparent reflectance of CCD images and how to use image spectral database data for image classification and recognition. Taking an area in Ningxia as an example, the maximum likelihood method and the included angle cosine method were respectively used to carry on the comparison and analysis of the classification of terrestrial objects and classification results.