为了实现对卫星控制系统中太阳敏感器的高精度地面标定和测试，提出一种真实模拟太阳光辐射特性的高精度准直式太阳模拟器设计方案，根据模拟器热功率高的特点，对氙灯与组合聚光镜、转向平面反射镜、光学积分器等主要组成部分进行了详细的光机结构与热控结构的设计。运用Ansys软件进行热学仿真分析，保证热控结构设计的合理性与最优性。通过实际检测，设计的太阳模拟器可以真实地模拟太阳光辐射特性，准直角小于32′，辐照面小于Φ100 mm时，不均匀度优于±1.6 ％；辐照面在Φ(100~300) mm时，不均匀度优于±4.2 ％，满足对高精度太阳敏感器的地面标定和精度测试。

In order to meet the high precision ground calibration and testing of sun sensor in satellite control system, a realistic simulation of solar radiation characteristic of high precision collimated solar simulator design was presented, according to the characteristics of simulator with high thermal power. The main component of the Xenon lamp in combination with the condenser lens, steering plane mirror and optical integrator was designed in detailed structure of the heat-ray control structure. Using Ansys software for thermal simulation to ensure the rationality and optimality of thermal control structure. By the actual detecting, the designed solar simulator can simulate the real characteristics of solar radiation, collimation angle is less than 32′, unevenness is better than ±1.6% when the irradiation surface is less than Φ100 mm; unevenness is better than ±4.2% when the irradiation surface is Φ(100-300) mm, meeting the high precision ground calibration and testing of sun sensor.