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CCD imagers MTF enhanced filter design
Jian, Zhang1,2; Yangyu, Fan1; Zhe, Xu2
2018-05-15
Conference Name17th IEEE International Conference on Communication Technology, ICCT 2017
Source Publication2017 17th IEEE International Conference on Communication Technology, ICCT 2017
Volume2017-October
Pages1720-1724
Conference Date2017-10-27
Conference PlaceChengdu, China
PublisherInstitute of Electrical and Electronics Engineers Inc.
Contribution Rank2
Abstract

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.

Department空间光学应用研究室
DOI10.1109/ICCT.2017.8359924
Indexed ByEI
ISBN9781509039432
Language英语
EI Accession Number20182305271468
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30339
Collection空间光学应用研究室
Affiliation1.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
Recommended Citation
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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