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针对常规星模拟器存在的模拟参数少、精度低和模拟技术难度大等具体问题,将μLED发光技术引入到星模拟器的设计中,提出一种基于μLED发光技术的新型星模拟器研制方法。结合星模拟器准直光学系统设计结果,详细设计了整体机械结构,以确保其具有在仿真环境下,最大程度弱化温变、振动等外界因素的特性。重点研究星点位置精度和星点发光亮度的控制技术,并对星点圆度、星点发光均匀度以及星点光谱控制技术进行具体分析。分析与测试结果均表明,所设计的星模拟器具有星间角距精度小于3″,多种5个连续星等模拟,同时满足星点圆度、发光均匀度以及发光光谱的多参数模拟性能。所提出的设计方法也为更高级别的星模拟器研制提供一种可行的技术方案。
Aiming at the specific problems of the conventional star simulator, such as low simulation parameters, low precision and difficult simulation technology, the μLED technology is introduced into the design of the star simulator, and a new star simulator based on μLED technology is proposed. Combined with the design results of collimating optical system of star simulator, the whole mechanical structure is designed in detail to ensure that it has the characteristics of external factors such as temperature change and vibration to the greatest degree under the simulation environment. Emphasis is placed on the control of the position accuracy of the star point and the brightness of the star point. Specific analysis is made on the star point roundness, the uniformity of the star point light and the star point spectrum control technique. The results of analysis and test show that the designed star simulator has the accuracy of less than 3 "and more than 5 continuous star simulations, while satisfying the multi-parameter simulation performance of star point circularity, luminosity uniformity and luminescence spectrum The proposed design method also provides a feasible technical solution for the development of higher level star simulator.