Radiation measurement of small targets based on PSF

	Radiation measurement of small targets based on PSF
	Chang S.-T.; Sun Z.-Y.; Zhang Y.-Y.; Zhu W.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:11 页码:2879-2887
摘要	A measurement algorithm based on Point Spread Function (PSF) was proposed to accurately measure radiation characteristics of infrared small targets which are tiny or quite far away from the IR imaging system. With the method, the PSF of the optical system was measured by using the slanted edge method under the premise of given target shapes. Then, the processes of imaging and sampling of the infrared focal plane arrays were modeled and the simulated image of the target on a detector was obtained. Furthermore, the radiance, size and center position of the target were estimated accurately by matching the simulated image and the actual image obtained from the IR imaging system. Finally, experiments were performed to verify this method. The obtained results show when the temperature of a circular target is 70 and the ideal imaging diameter is greater than 4 pixels, the maximum error of radiance measurement is 2.35% and that of the target size (area) measurement is 1.89%. The experimental results demonstrate that the method is feasible and is suitable for capturing radiation properties of targets or backgrounds, performance measurement of infrared systems, image restoration and small target positioning.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44306
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Chang S.-T.,Sun Z.-Y.,Zhang Y.-Y.,et al. Radiation measurement of small targets based on PSF[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(11):2879-2887.
APA	Chang S.-T.,Sun Z.-Y.,Zhang Y.-Y.,&Zhu W..(2014).Radiation measurement of small targets based on PSF.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(11),2879-2887.
MLA	Chang S.-T.,et al."Radiation measurement of small targets based on PSF".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.11(2014):2879-2887.

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