中文摘要：

通过FY-2E卫星可见光通道、红外1、红外2、红外3、红外4通道的杂散光评价,并且和FY-2D卫星发射初期的各通道杂散光评价对比,得到了FY-2E卫星可见光通道杂散光能量和FY-2D卫星可见光通道杂散光能量基本持平、其中A机通道性能略有提高,红外1、红外2、红外3、红外4各通道的杂散光绝对能量相比FY-2D卫星各红外通道杂散光绝对能量下降约30%～40%、其中红外2通道信杂比明显提高的结论;分析发现,是FY-2E卫星光路系统中的里奥光栏在降低杂散光方面发挥了巨大的作用。

英文摘要：

After estimate for stray light of FY-2E satellite, and comparison to stray light of FY-2D satellite, there is the conclusion that visible stray light of FY-2E is similar to that of FY-2E satellite, and A detector is better, in infrared channels, the stray light is less 30%-40% than that of FY-2D, especially, in infrared channel 2, SNR is higher than that of FY-2D. By the analysis, lyot stop is the useful way tO reduce stray light.