Dynamic modulation transfer function analysis and research under sinusoidal vibration

	Dynamic modulation transfer function analysis and research under sinusoidal vibration
	Du, Y.; Y. Ding; Y. Xu and P. Nie
	2015
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	35 期号:7
摘要	The image resolution of aerial camera declines resulting from vibration and the dynamic modulation transfer function (MTF) is used to evaluate the impact of vibration on image quality. In accordance with the transfer function theory of linear optical system, a formula based on Bessel function of the first kind is established to calculate dynamic MTF for sinusoidal vibration at any frequency. The tolerance of vibration amplitude is calculated with the restriction that dynamic MTF at Nyquist frequency is no less than 0.9. For low-frequency, the amplitude tolerance declines as frequency rises. And the tolerance of high-frequency is 0.2 pixel. The dynamic imaging experiment of the edge target under sinusoidal vibration is carried out. The experiment shows that the relative error between the MTFs calculated from the derived formula and the MTFs obtained by slanted-edge method from the practical degraded image is less than 4.25%. The accuracy rises 18.5 times compared with other relevant literature. Therefore, the proposed formula can be used to estimate and evaluate the image quality of aerial camera under vibration and is significant for the design of the line-of-sight stabilization system. , 2015, Chinese Optical Society. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56160
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Du, Y.,Y. Ding,Y. Xu and P. Nie. Dynamic modulation transfer function analysis and research under sinusoidal vibration[J]. Guangxue Xuebao/Acta Optica Sinica,2015,35(7).
APA	Du, Y.,Y. Ding,&Y. Xu and P. Nie.(2015).Dynamic modulation transfer function analysis and research under sinusoidal vibration.Guangxue Xuebao/Acta Optica Sinica,35(7).
MLA	Du, Y.,et al."Dynamic modulation transfer function analysis and research under sinusoidal vibration".Guangxue Xuebao/Acta Optica Sinica 35.7(2015).

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