光子学报, 2016, 45 (2): 0223001, 网络出版: 2016-04-01   

星模拟器星点能量中心修正方法的研究

Star Point Energy Center Correction Method of Star Simulator
王凌云 1,2,*王博 1张国玉 1,2孙高飞 1,2刘石 1,2
作者单位
1 长春理工大学,长春 130022
2 吉林省光电测控仪器工程技术研究中心,长春 130022
摘要
对星模光学系统中各种像差对几何中心位置的影响及像差对显示星点能量中心位置造成的偏差进行了分析与综合评估.分析结果表明,视场位置越大的星点产生的像点能量越不均匀,重心偏移越明显,系统中慧差和畸变对于星点能量中心影响较大.根据球面镜组成的共轴光学系统性质可知,能量中心的偏移发生在星点所在极半径方向上,因此提出了一种基于极坐标的星点位置修正方法,只需在星点所在方向对极半径进行修正.该方法简化了基于二维坐标轴分区修正的过程,减少了数据计算量.利用极坐标修正方法对星模拟器修正前后的单星位置误差进行了测试,实验结果表明极坐标修正过程较以往修正方法简单快捷,且修正结果更加准确.
Abstract
The affects of various aberration on geometrical center position, and the deviation of displayed star position energy center caused by aberration in the star simulator optical system were analyzed and comprehensively evaluated. The analysis results show that, the energy generated by the greater star position field will be more uneven, and the energy center offset will be more obvious. Coma and distortion have great influence on the energy star center. According to the property of coaxial optical system composed by the spherical mirror, energy center offset is occurred in the polar radius direction of the star. A correction method based on polar coordinates of the star position was proposed, which only need to correct the polar radius in the direction of star. The method simplifies the correction based on twodimensional coordinate axes partition and reduces a lot of data calculations. The errors between the revised single star positions with star simulator corrected and uncorrected were tested by the polar coordinate correction method, the experimental results show that the correction processing based on polar coordinates is simple and shortcut, and the correction results are more accurate.
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王凌云, 王博, 张国玉, 孙高飞, 刘石. 星模拟器星点能量中心修正方法的研究[J]. 光子学报, 2016, 45(2): 0223001. WANG Lingyun, WANG Bo, ZHANG Guoyu, SUN Gaofei, LIU Shi. Star Point Energy Center Correction Method of Star Simulator[J]. ACTA PHOTONICA SINICA, 2016, 45(2): 0223001.

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