【摘要】 为客观评价天宫二号宽波段遥感影像质量情况,以天宫二号对地观测数据与Landsat8影像作为测试数据源,通过单波段灰度值、地物灰度值对比方法,分析比较可见光谱段范围内的光谱性能与应用潜力,最后采用最大似然法进行地物类型分类。结果表明:天宫二号宽波段遥感影像具有谱段丰富,分辨率低,单波段横向阈值宽且平缓的特点,适合于反演大范围且地物类型较为一致的地表信息。更多还原

【Abstract】 In order to objectively evaluate the quality of Tiangong Ⅱ wide-band remote sensing image, the Tiangong Ⅱ ground observation data and Landsat 8 image are used as test data sources. The spectral performance and application potential in the visible spectral band are analyzed and compared by the contrast method of single-band gray value and ground object gray value. Finally, the maximum likelihood method is used to classify the ground object types.The results show that the wide-band remote sensing image of Tiangong Ⅱ has the characteristics of abundant spectral bands, low resolution, wide and gentle lateral threshold of single-band, and is suitable for inversion of large-scale surface information with more consistent types of objects.更多还原