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CCD imagers MTF enhanced filter design
Jian, Zhang1,2; Yangyu, Fan1; Zhe, Xu2
2018-05-15
会议名称17th IEEE International Conference on Communication Technology, ICCT 2017
会议录名称2017 17th IEEE International Conference on Communication Technology, ICCT 2017
卷号2017-October
页码1720-1724
会议日期2017-10-27
会议地点Chengdu, China
出版者Institute of Electrical and Electronics Engineers Inc.
产权排序2
摘要

In order to improve the imaging quality of the optical imagers, the modulation transfer function enhanced CCD signal filter circuit is designed. Firstly, the imager MTF transfer chain is discussed, and the impact to MTF causing by each part of imaging chain is introduced. Secondly, from frequency domain and time domain respectively the MTF enhanced filter principle and implementation method are analyzed, the filter minimum bandwidth is confirmed. By comparing the step response of the filter and the response of the camera to the Nyquist spatial frequency fringe imaging in simulation experiment, the optimum quality factor of the MTF enhancement filter is determined. Lastly, the camera MTF test was carried out using black and white stripe target, and the SNR of the camera was measured by integrating sphere. The test results show that MTF enhanced filter can improve the system MTF 30% when the quality factor is 1, and the noise suppression capability is comparable to that of the maximally flat filter in the pass-band. MTF enhancement filter can effectively improve the imaging performance of CCD camera. © 2017 IEEE.

作者部门空间光学应用研究室
DOI10.1109/ICCT.2017.8359924
收录类别EI ; ISTP
ISBN号9781509039432
语种英语
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/30339
专题空间光学应用研究室
作者单位1.Institute of Information, Northwest Polytechnical University, Xi'an, China
2.Space Optics Lab, Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China
推荐引用方式
GB/T 7714
Jian, Zhang,Yangyu, Fan,Zhe, Xu. CCD imagers MTF enhanced filter design[C]:Institute of Electrical and Electronics Engineers Inc.,2018:1720-1724.
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