CIOMP OpenIR  > 中科院长春光机所知识产出
Nonuniformity Correction Method Based on Gradient Scenes
Zhou, D.; D. Wang; L. Huo; R. Liu and P. Jia
Source PublicationGuangxue Xuebao/Acta Optica Sinica
AbstractLong 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.
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Document Type期刊论文
Recommended Citation
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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