摘要
针对复杂环境下,光电系统作用性能缺少量化指导数据的实际问题,提出了一种基于目标特性计算的光电系统作用性能评估方法。考虑目标与背景光学特性的重要影响,将目标特性计算引入到光电系统作用性能评估环节。以采用目标任务性能准则为判据的NvThermIP模型为基础,修正了原有模型中的视在对比度计算方法;借助辐射特性建模技术,给出了基于辐射亮度计算的视在对比度计算公式,将视在对比度计算的适用范围从红外波段扩展到了可见光波段,从而将NvThermIP模型的适用光电系统类型从红外波段拓展到了可见光波段,同时也提升了作用性能评估的准确度。以光电系统作用性能实测数据为依据,验证了文中所述方法的有效性,达到了提升光电系统作用性能评估精度的目标。
Aiming at the practical problem of lacking quantitative guidance data on the performance of electro-optical system in complex environment,a method for evaluating the performance of electro-optical system based on the calculation of target and background optical characteristics was proposed.Considering the important influence of target and background optical characteristics,the calculation of target characteristics was introduced into the performance evaluation of electro-optical system.Based on the NvThermIP model that adopted the target task performance criterion,the calculation method of apparent contrast in the original model was modified.Using the radiation characteristic modeling technology,the calculation formula of apparent contrast based on radiance calculation was given,which could extend the applicability of apparent contrast calculation from infrared band to visible band.Thus,the NvThermIP model could be applied to electro-optical systems from infrared to visible wavelengths,and the accuracy of performance evaluation could be improved.Based on the measured data of the electro-optical system performance,the effectiveness of the method described was verified.The new method could achieve the goal of improving the accuracy of performance evaluation.
作者
李洁
孙科峰
LI Jie;SUN Kefeng(College of Energy and Architecture,Xi′an Aeronautical Institute,Xi′an 710077,CHN;Xi′an Institute of Applied Optics,Xi′an 710065,CHN)
出处
《光电子技术》
CAS
2024年第1期78-83,共6页
Optoelectronic Technology
基金
省部级兵器联合基金资助项目(6141B012203)。
