基于混合光源的星模拟器光谱研究

Spectral Study for Star Simulator on Hybrid Light Source

提出了一种基于氙灯和卤钨灯混合光源的星模拟器光谱模拟方案.采用氙灯和卤钨灯组成宽光谱光源灯阵,并通过色温模拟与控制模块后射入积分球,为星模拟器提供理想光源,模拟出与特定色温3 900K,4 800K,6 500K相近的光谱曲线.通过对标准黑体光谱曲线的仿真,计算出滤光片各个微小波段最优透过率,并对微小波段区间的透过率进行区间合并处理,得到满足设计指标要求的滤光片透过率,实现对特定色温光谱曲线的模拟.仿真结果表明,采用本文方案能够满足微小波段匹配模拟误差在10%以内,用相对面积法验证匹配误差在4%以内,从而为星模拟器模拟特定色温的光谱曲线提供有效的方法.

A scheme of star simulator spectrum simulation based on mixed light source of xenon lamp and halogen tungsten lamp for foundation was proposed. The wide spectrum light source array was composed of xenon lamp and halogen lamp. After color temperature simulation and module controlling, the light entered into the integrating sphere to provide ideal light source for star simulator, and spectral curves were stimulated at specific color temperatures of nearly 3 900 K, 4 800 K, 6 500 K. Through the simulation of the blackbody spectrum curve of standard, the optimal transmission rate was calculated for each band filter, and the transmission rate of interval in tiny brand was combined for getting the transmission rate which satisfied the design index. The simulation results showed that, by using the proposed scheme, the small band matching simulation error would be less than 10 %, with the relative area method verification matching error is within 4 %, and this scheme provides an effective method for the star simulator to simulate spectral curves of the specific color temperatures.