针对窗口自发辐射对于红外探测器系统性能产生的影响，利用 ASAP软件对红外探测器窗口的自发辐射进行仿真，仿真结果以在探测器前方等效黑体辐射的方式呈现，同时红外探测器在不同温度黑体的辐射下进行实验，得到真实的等效黑体辐射。通过两种仿真结果与实验结果的对比，分析了当红外探测器探测不同温度时，两种仿真方案与实际真实值的误差，最终确定方案二适于仿真红外探测器窗口。方案二同时也可以为其他透明光学组件自发辐射的仿真建模提供参考。

For studying the effect of spontaneous emission of window on the performance of infrared detector system, we used ASAP software to simulate the spontaneous radiation of infrared detector window. The simulation results were presented in the way of equivalent black body radiation in front of the detector, and infrared detector under different temperature of black body radiation experiments were conducted to get real equivalent blackbody radiation. Through the comparison of two kinds of simulation results with experimental results, the error of the two kinds of simulation methods and the actual value were analyzed when the infrared detector detected different temperature. Finally, scheme two was suitable for the simulation of infrared detector window. Scheme two could also provide reference for the simulation modeling of other transparent optical components.