摘要
在天基遥感探测应用中,动态范围、时空变化率是影响红外高温目标高精度探测与跟踪识别的重要因素。通常受探测器暗电流、电路噪声等因素的影响,探测系统的单景动态范围一般小于72 dB左右,难以覆盖动态范围达100 dB左右的超强目标,降低了目标的识别能力和定量化描述精度。针对以上问题,提出了一种探测载荷自适应参数调节技术,通过自适应双曝光策略调整积分时间,能够在最大化目标探测信噪比的同时实现对目标能量的精确描述。仿真实验结果表明:所提方法操作简单,且能有效地实现整个动态范围内对目标的探测与描述。该方法可为天基目标智能化探测研究提供有益参考。
In the exploration application of space-based remote sensing, dynamic range and spatiotemporal change rate are the important factors affecting the high-precision detection, tracking and identification of infrared high temperature targets. Generally, influenced by the dark current and circuit noise of the detectors, the dynamic range of a single scene of the detection system is usually less than about 72 dB, and it is difficult to cover the super targets with the dynamic range of about 100 dB, which reduces the recognition ability and quantitative description accuracy of the target. In terms of the problems mentioned above, an adaptive parameter adjustment technique for the detection payloads was proposed. By adjusting the integral time through double exposure and adaptive strategy, the accurate description of target energy could be achieved while maximizing the signal-tonoise ratio of target detection. Simulation results show that the proposed method is simple to operate and can effectively detect and describe targets in the whole dynamic range. This method can provide a useful reference for the research of intelligent detection of space-based objects.
作者
蔡萍
李潇雁
苏晓峰
胡亭亮
陈凡胜
Cai Ping;Li Xiaoyan;Su Xiaofeng;Hu Tingliang;Chen Fansheng(Key Laboratory of Ielligeant Infrared Perception,Chinese Academy of Sciences,Shanghai 200083,China;University of Chinese Academy of Science,Beijing 00009,China;Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China;Center of Optoeletronie Engineering,Shanghai Istitute of Technical Plhysics,Chinese Academy of Sciences,South Taihu,Huzhou,Huzhou 31300,0China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2020年第10期71-78,共8页
Infrared and Laser Engineering
基金
国家自然科学基金(61975222)。
关键词
动态范围
积分时间自适应
双曝光
dynamic range
adaptive integral time
double exposure
作者简介
蔡萍(1988-),女,硕士生,主要从事空间遥感与光电系统探测等方面的研究。Email:caiping@mail.sitp.ac.cn;胡亭亮(1963-),男,研究员,博士生导师,主要从事空间遥感仪器的光机结构设计方面的研究。Email:hutingliang@mail.sitp.ac.cn。
