空间场景模拟器的光源系统设计

The Luminous Source Design of the Space Scene Simulator

针对空间场景模拟器的需要,本文提出采用子通道滤光技术和DSP控制技术来模拟恒星光谱和亮度,可以精确地模拟恒星的星等亮度和光谱。理论分析表明,光谱滤光子通道越多,模拟的光谱越接近真实的光谱。同时理论上也证明了采用DSP的PID技术可以更为精确和稳定的控制输出的光强。最后给出了一致性的实验结果。

To meet the needs of the luminous source of the Space Scene Simulator,a sub-channel light-filtering technique and DSP control technique are promoted to adjust precisely the spectrum distribution and the luminance of simulated star.Theoretical analysis indicates that the simulated spectrum is closer to actual star spectrum with the use of more light-filter sub-channels.The output intensity of simulated star can be controlled precisely and steadily by the PID technique.Finally a coincident result of experiment is given to verify the theory analysis.