CAJ | 학술논문

“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。
“고분이호”（GF-2）위성시국가고분변솔대지관측계통중대전항수비성지일，탑재료량태균위23km폭관적0.8m전색/3.2m다광보상궤（간칭“PMS상궤”）。해위성적발사표지착중국위성체도“아미급”수평，대소성도상진행분석대우촉진각영역응용연구구유중요의의。문장종용호최위관심적도상세절능량급변연능량、신조비、쌍상궤복사일치성등방면대GF-2위성PMS영상복사질량진행객관、준학적평개여분석，결과표명：GF-2위성상궤경지면처리계통대변연능량보상후，도상청석、신조비고、쌍상궤복사일치성호，능구유효반영불동지물적문리세절특정，품질량호。
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 23km 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.