中文摘要：

对最新发射的FY-2G静止气象卫星可见光和红外通道图像质量进行分析与评价,为静止卫星监测数据的获取与处理提供参考.基于直方图、纹理特征参数、功率谱、调制传递函数和噪声估计等指标,并与同一区域的MTSAT-2图像对比,得到以下结论：FY-2G可见光通道图像清晰、层次丰富,能较明确地反映地物空间结构,图像质量略优于MTSAT-2;FY-2G红外四个通道相比,长波红外通道图像最为清晰,包含地物信息最多,相对MTSAT-2,两颗卫星红外图像质量差别不大,后者略好.总体而言,FY-2G图像具有很好的性能,可满足业务运行和实际应用的需要.

英文摘要：

The quality of the visible and infrared images is analyzed and evaluated for FY-2G meteorological satellite, which is important for data acquisition and processing. Results of comparing the FY-2G and MTSAT-2 images＇ histogram, textural feature, power spectrum, modulation transfer function and noise estimation indicate that FY- 2G visible image has better performance in aspect of clarity and textural characteristics, the quality of long-wave infrared images is superior to the medium wave infrared and water vapor images, and the quality of MTSAT-2 infrared images is slightly better than FY- 2G. Based on the above analysis, FY-2G images can meet the requirements for its applications.