红外, 2015, 36 (9): 1, 网络出版: 2015-10-22  

LI Zhao-long, SHEN Tong-sheng, LOU Shu-li, SHI Hao-ran

Research on Nonuniformity Simulation of Infrared Focal Plane Array
作者单位
1 海军航空工程学院研究生管理大队,山东 烟台 264001
2 国防科技信息中心,北京 100037
3 海军航空工程学院控制工程系,山东 烟台 264001
摘要
在研究红外焦平面阵列(Infrared Focal Plane Array, IRFPA)非均匀性校正算法的过程中, 需要通过仿真获取大量带有非均匀性信息的目标图像。根据IRFPA非均匀性的产生机 理,分别建立了探测元非均匀性、读出电路非均匀性和漂移噪声的数学模型,并利用这些 模型在理想图像上分别叠加了这三部分的非均匀性,最终获取了目标图像。在仿真过程中,假设非均 匀性噪声符合高斯分布,通过设置模型系数使其具有不同的均值和方差,可以实现 不同程度的非均匀性仿真。由于考虑了漂移噪声,本文方法的仿真结果更为符合实际情况。
Abstract
During the study of nonuniformity correction algorithms for Infrared Focal Plane Arrays (IRFPA), a large number of target images containing nonuniformity information need to be obtained by simulation. According to the generation mechanism of nonuniformity of IRFPAs, a detection element nonuniformity model, a readout circuit nonuniformity model and a drift noise model are established respectively. By superposing the nonuniformity of the three models on the ideal image respectively, the target image is obtained eventually. In the process of simulation, it is assumed that the nonuniformity noise obeys the Gaussian distribution. By setting the model coefficients with different mean and variant, different degrees of nonuniformity simulation can be achieved. Because the drift noise is considered, the simulation results of the proposed method are more consistent to actual situation.

李召龙, 沈同圣, 娄树理, 史浩然. LI Zhao-long, SHEN Tong-sheng, LOU Shu-li, SHI Hao-ran[J]. 红外, 2015, 36(9): 1. 李召龙, 沈同圣, 娄树理, 史浩然. Research on Nonuniformity Simulation of Infrared Focal Plane Array[J]. INFRARED, 2015, 36(9): 1.

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