point target detection
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2021 ◽  
Vol 2010 (1) ◽  
pp. 012189
Author(s):  
Bendong Zhao ◽  
Fengshun Lu ◽  
Xingzhi Hu ◽  
Duoneng Liu ◽  
Wenkai Wang

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3273
Author(s):  
Shuai Ding ◽  
Dejiang Wang ◽  
Tao Zhang

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.


2019 ◽  
Vol 102 ◽  
pp. 103040
Author(s):  
Tian Kou ◽  
Zhanwu Li ◽  
Haiyan Wang ◽  
Fang Wang

Author(s):  
Jihwan Youn ◽  
Martin Lind Ommen ◽  
Matthias Bo Stuart ◽  
Erik Vilain Thomsen ◽  
Niels Bent Larsen ◽  
...  

2019 ◽  
Vol 48 (2) ◽  
pp. 211002
Author(s):  
潘胜达 PAN Sheng-da ◽  
赵明 ZHAO Ming ◽  
安博文 AN Bo-wen ◽  
苏晓峰 SU Xiao-feng ◽  
林长青 LIN Chang-qing

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