红外点目标探测距离估算模型  

Operating Distance Estimation Model of Infrared Point Target

作　　者：崇元 艾葳 王玉坤[1] CHONG Yuan;AI Wei;WANG Yu-kun(Unit 91550 of PLA, Dalian 116023, China)

机构地区：[1]中国人民解放军91550部队,辽宁大连116023

出　　处：《指挥控制与仿真》2020年第6期59-62,共4页Command Control & Simulation

摘　　要：红外探测系统作用距离由探测器特性、目标与背景辐射、目标像元弥散尺寸等因素决定。传统红外探测系统作用距离方程没有系统考虑点目标在像元弥散作用下的影响,导致计算得到的探测距离往往比实际目标所在位置偏远,严重影响指挥员指挥决策。分析了点目标在探测器靶面上形成弥散成像的主要影响因素,并以定量方式计算出点目标弥散成像像元数,推导了考虑点目标像元弥散尺寸因素的改进目标作用距离方程。在仿真实验中分别对两种红外探测器作用距离进行分析,在考虑像元弥散与否情况下,分析了目标在靶面上所形成的像元数对应关系以及与探测距离的关系,并与目标探测实测值进行比较,验证了模型的有效性。The operating distance of infrared detection system is determined by the detector's characteristics,target and background radiation,target pixel dispersion size and other factors.The traditional infrared operating distance equation does not consider the influence of point target under the effect of pixel dispersion,so the calculated detection distance is often more remote than the actual target,which seriously affects the commander’s decision-making.In this paper,the main factors influencing the formation of dispersion of point target on the detector target surface are analyzed,and the image pixel number of point target dispersion are calculated quantitatively,an improved operating distance equation considering the pixel dispersion size of the point target is derived.In the simulation example,it is analyzed that the operating distance of two kinds of infrared detectors,the corresponding relationship between the pixel number formed on the target surface and the detection distance is analyzed with or without considering the pixel dispersion.The validity of the model is verified by comparing with the measured data of target detection.

关 键 词：红外点目标 探测距离 像元弥散 

分 类 号：TN216[电子电信—物理电子学]