天宫二号对地观测数据与Landsat8卫星遥感影像对比分析  

Comparative analysis of Tiankong Ⅱ earth observation data and Landsat8 satellite remote sensing data

作　　者：蒙良莉 钟仕全 孙明[3] 莫建飞[3] Meng Liangli;Zhong Shiquan;Sun Ming;Mo Jianfei(Nanning Normal University/Key Laboratory of Beibu Gulf Environment Change and Resources Utilization of Ministry of Education,Nanning 530001;Nanning Normal University/Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation,Nanning 530001;Guangxi Institute of Meteorological Sciences,China/Remote Sensing Application and Validation Base of National Satellite Meteorological Center,Nanning 530022)

机构地区：[1]南宁师范大学北部湾环境演变与资源利用教育部重点实验室,南宁530001 [2]南宁师范大学广西地表过程与智能模拟重点实验室,南宁530001 [3]广西壮族自治区气象科学研究所/国家卫星气象中心遥感应用与验证基地,南宁530022

出　　处：《气象研究与应用》2019年第2期42-46,50,共6页Journal of Meteorological Research and Application

基　　金：广西科技厅重点研发项目（桂科AB17292051）;广西区气象局气象科研计划项目（桂气科2017Z05）;南宁师范大学省部级重点实验室基金项目（GTEU-KLOP-K1702)

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。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.

关 键 词：天宫二号 Landsat8 可见光 光谱特性 应用潜力 

分 类 号：P407[天文地球—大气科学及气象学]