摘要
随着新一代红外探测器像元尺寸的不断缩小,红外探测器的光学装配精度越来越成为系统性能的关键环节,这种情况对远程观测光学系统尤为重要。结合光学装配发展的实际需要,本文提出了一种基于实时检测合作目标成像特征的方法,直接利用探测器成像结果作为反馈校准信息,通过分别计算点状、十字及圆形黑体成像目标的相关特征生成相应的六自由度对准的判决依据。为了验证方法的有效性,设计了相应的基于DSP的成像信息反馈电路和高精度的六维调整平台进行验证实验。实验结果表明,该方法采用局部最优的判决方式,可以很好的在六维方向上实现光学装配调整。
As the pixel size of new generation of infrared detector is decreasing continuously, the optical assembling precision of IR detector is increasingly becoming the key issue of the system performance, which is especially important for remote optical sensing system. Combined with the practical requirements of optical assembling, a method based on real-time detecting corporative object imaging features is proposed, which directly takes the detector imaging result as feedback calibration information, and calculates the related features of corporative objects including dot, cross and circular imaging objects separately to generate the judging criterion for six-dimension alignment. In order to verify the effectiveness of the method, a high precision six-dimensional adjusting platform and related imaging information feedback circuit based on DSP were designed, and experiment was carried out. The experimental results show that the proposed method adopts local optimum judging means and can realize optical assembling adjustment in six-dimensional directions nicely.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2013年第2期296-303,共8页
Chinese Journal of Scientific Instrument
关键词
红外探测器
光学调校
调整平台
目标检测
infrared detector
optical alignment
adjustment platform
object detection
