长波红外对常温目标的跟踪成像研究  

A study on tracking and imaging targets in normal atmospheric temperature with long-wavelength infrared apparatus

作　　者：高昕[1] 邢廷文[2] 

机构地区：[1]北京跟踪与通信技术研究所 [2]中国科学院光电技术研究所,四川成都610209

出　　处：《光电工程》2004年第B12期64-66,共3页Opto-Electronic Engineering

摘　　要：靶场观测中存在大量不发光和表面温度接近常温的低温目标,根据它们的光谱辐射特性、背景辐射特性和大气透过率与目标距离的关系,分别选择了中波和长波红外探测器对降落伞进行气球放飞试验。试验结果表明,长波红外探测器对常温目标的探测要优于中波红外。选择分辨力320×256 的碲镉汞探测器作探测能力实验,以 SNR≥5 为可探测条件,当目标表面温度大于 260K时,对直径 5m 的降落伞的作用距离可达 50Km。Large number of non-luminous and low-temperature targets in which their surface temperature approaching normal atmospheric temperature exist in range observation. Experiment of parachute flight carried up by balloon is done through selecting intermediate-wavelength and long-wavelength IR detectors, respectively, according to their spectral radiation behavior, background radiation behavior, and the relation between atmospheric transmittance and target distance. The experimental results show that the detection for normal atmospheric temperature targets with long-wavelength IR detector is better than that with intermediate-wavelength IR detector. The detection capability experiments are carried out by mercury cadmium telluride (HgCdTe) detector with a resolution of 320×256. Assuming SNR≥5 as detectable condition, when surface temperature of a target is more than 260k, the operating distance of IR detector to the parachute with a diameter of 5m can be up to 50Km.

关 键 词：红外探测 红外焦平面器件 目标跟踪 

分 类 号：TN215[电子电信—物理电子学] V556[航空宇航科学与技术—人机与环境工程]