Nonuniformity Correction Method Based on Gradient Scenes

	Nonuniformity Correction Method Based on Gradient Scenes
	Zhou, D.; D. Wang; L. Huo; R. Liu and P. Jia
	2017
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	37 期号:5
摘要	Long wave infrared detectors are often employed in airborne infrared early warning systems, which are often contaminated the with heavy nonuniformity noises. To correct the nonuniformity and compensate the nonlinearity of detectors, a nonuniformity correction method is proposed. The observation model of radiance nonuniformity is introduced. The correction coefficients are deduced in theory with the reference of a blackbody and a gradient scene. And, an outfield experiment with a proof-of-concept camera is performed to detect the airliners. Experimental results show that the peak value of local standard deviation of the corrected image decreases from 8.57 to 2.39, compared with the two-point correction method based on a blackbody. For the target of Airbus A319 from 50.64 km away, the signal-to-clutter ratio rises from 4.87 to 11.22. The proposed method can decrease the local standard deviation effectively, which has a significant contribution to airborne infrared early warning systems. 2017, Chinese Lasers Press. All right reserved.
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/181722/59488
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhou, D.,D. Wang,L. Huo,et al. Nonuniformity Correction Method Based on Gradient Scenes[J]. Guangxue Xuebao/Acta Optica Sinica,2017,37(5).
APA	Zhou, D.,D. Wang,L. Huo,&R. Liu and P. Jia.(2017).Nonuniformity Correction Method Based on Gradient Scenes.Guangxue Xuebao/Acta Optica Sinica,37(5).
MLA	Zhou, D.,et al."Nonuniformity Correction Method Based on Gradient Scenes".Guangxue Xuebao/Acta Optica Sinica 37.5(2017).

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