A Median-Ratio Scene-Based Non-Uniformity Correction Method for Airborne Infrared Point Target Detection System

doi:10.3390/s20113273

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	A Median-Ratio Scene-Based Non-Uniformity Correction Method for Airborne Infrared Point Target Detection System
	S. Ding,D. J. Wang and T. Zhang
刊名	Sensors
	2020
卷号	20 期号:11 页码:17
DOI	10.3390/s20113273
英文摘要	Infrared detectors suffer from severe non-uniform noise which highly reduces image resolution and point target signal-to-noise ratio. This is the restriction for airborne point target detection systems in reaching the background limit. The existing methods are either not accurate enough, or too complex to be applied to engineering. To improve the precision and reduce the algorithm complexity of scene-based Non-Uniformity Correction (NUC) for an airborne point target detection system, a Median-Ratio Scene-based NUC (MRSBNUC) method is proposed. The method is based on the assumption that the median value of neighboring pixels is approximately constant. The NUC coefficients are calculated recursively by selecting the median ratio of adjacent pixels. Several experiments were designed and conducted. For both the clear sky scene and scene with clouds, the non-uniformity is effectively reduced. Furthermore, targets were detected in outfield experiments. For Target 1 48.36 km away and Target 2 50.53 km away, employing MRSBNUC the SNR of the target increased 2.09 and 1.73 times respectively compared to Two-Point NUC. It was concluded that the MRSBNUC method can reduce the non-uniformity of the detector effectively which leads to a longer detection distance and fewer false alarms of the airborne point target detection system.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64669]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	S. Ding,D. J. Wang and T. Zhang. A Median-Ratio Scene-Based Non-Uniformity Correction Method for Airborne Infrared Point Target Detection System[J]. Sensors,2020,20(11):17.
APA	S. Ding,D. J. Wang and T. Zhang.(2020).A Median-Ratio Scene-Based Non-Uniformity Correction Method for Airborne Infrared Point Target Detection System.Sensors,20(11),17.
MLA	S. Ding,D. J. Wang and T. Zhang."A Median-Ratio Scene-Based Non-Uniformity Correction Method for Airborne Infrared Point Target Detection System".Sensors 20.11(2020):17.