“高分二号”卫星相机影像辐射质量评价  

Radiometric Image Quality Assessment of GF-2 Satellite PMS Camera

作　　者：徐文[1] 龙小祥 李庆鹏[1] 

机构地区：[1]中国资源卫星应用中心,北京100094

出　　处：《航天返回与遥感》2015年第4期1-9,共9页Spacecraft Recovery & Remote Sensing

基　　金：国家重大科技专项工程

摘　　要："高分二号"(GF-2)卫星是国家高分辨率对地观测系统重大专项首批星之一,搭载了两台均为23km幅宽的0.8m全色/3.2m多光谱相机(简称"PMS相机")。该卫星的发射标志着中国卫星达到"亚米级"水平,对所成图像进行分析对于促进各领域应用研究具有重要意义。文章从用户最为关心的图像细节能量及边缘能量、信噪比、双相机辐射一致性等方面对GF-2卫星PMS影像辐射质量进行客观、准确的评价与分析,结果表明:GF-2卫星相机经地面处理系统对边缘能量补偿后,图像清晰、信噪比高、双相机辐射一致性好,能够有效反映不同地物的纹理细节特征,品质良好。GF-2 is one of the first batch of satellites in the major national projects of high resolution earth observation system, which is equipped with two cameras of 0.8m panchromatic and 3.2m multispectral resolution with 23 km width. The launch of GF-2 marks that China＇s satellites have reached to sub-meter level, and the analysis of the GF-2 image is very important for promoting its application research in various fields. In this paper, the quality of PMS images of GF-2 satellite is evaluated and analyzed objectively, which in terms of image energy details and edge energy, signal to noise ratio, consistence of the dual camera radiation and other aspects which user most concerns. The analysis shows that GF-2 satellite PMS camera can effectively reflect the details of different features, with good quality, clear image, high SNR and consistent good dual camera radiation.

关 键 词：辐射质量评价 信噪比 边缘能量 空间相机 “高分二号”卫星 航天遥感 

分 类 号：TN911.73[电子电信—通信与信息系统]