针对目标特性研究需求，设计了有效辐照面直径2.4 m的太阳模拟器。要求辐照面内的照度不小于0.3个太阳常数，出射光束准直角不大于±1°且被照面的不均匀度不大于±3%，光谱失配误差达到Ｃ级。太阳模拟器主要由四个短弧氙灯、四个椭球面反射镜、两个平面反射镜、一组积分器和一个准直反射镜组成。对设计结果进行了软件仿真分析和实验测试。测试结果表明：太阳模拟器的有效光斑直径为2.43 m，被照面平均照度为3 382 lx，光束准直角±0.97°，不均匀度为±2.8%，光谱失配误差达到Ｃ级，满足设计要求。

According to the demands of target characteristics research, a solar simulator with 2.4 m-diameter effective illuminated area was designed. Several targets were required that the illumination of irradiated area was not less than 0.3 solar constant; the collimating angle of outgoing beam was less than ±1°, the un-uniformity of irradiated surface was less than ±3% and the spectral mismatch error reached level C. The solar simulator consisted of four short-arc xenon lamps, four ellipsoidal reflectors, two flat reflectors, a group of optical integrator, and a collimating reflector. Software simulation analysis and experiment test were carried out for the design. Test results show that the diameter of effective illuminated area is 2.43 m, the mean illumination of irradiated area is 3 382 lx, the collimating angle of outgoing beam is ±0.97°, the un-uniformity of irradiated surface is ±2.8% and the spectral mismatch error reaches level C, which meet all the requirements.