摘要
简要分析了非扫描激光成像的技术优势,介绍了利用条纹管实现非扫描激光成像的工作原理,说明了图像空间分辨力与系统距离精度的对应关系。对影响图像空间分辨力的主要因素进行了理论分析,得到了系统总空间分辨力与各单元器件空间分辨力和放大倍率的对应关系,在此基础上,对现有条纹管成像系统进行了相应的计算,得到了空间分辨力的理论预期值;最后,提出了一种基于分辨力板成像的系统空间分辨力测试方法,设计了相应的验证实验,对实测图像进行了去噪处理和数据分析,得到了图像的衬比度传递函数(CTF)曲线,通过衬比度传递函数分析,计算出了成像系统的实际空间分辨力,并将实测的分辨力数据与理论值进行了对比分析。
The advantages of scannerless lidar and the operating principle of streak tube imaging lidar are introduced; the relationship between range resolution and spatial resolution is expounded. Based on analysis of the key factors that influence the spatial resolution of streak tube imaging lidar, the equation to calculate the overall spatial resolution is founded, and corresponding mathematical analyses are also made to predict the performance, finally, by means of resolution panel, we set up experiment to validate the spatial distinguishing ability of the system and get the raw resolution image and process the image by noise filtering. Through calculation of the contrast transfer function, we get the practical spatial resolution data and make performance analysis by comparing the practical data with theoretical data.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2007年第6期1023-1026,共4页
Acta Optica Sinica
基金
哈尔滨工业大学优秀团队支持计划资助课题。
