3mm波段隐身目标辐射温度的温变模型  

Temperature Variation Model of Stealth Target's Radiation Temperature in 3 Millimeter Wave Band

作　　者：龚冰[1] 娄国伟[1] 李兴国[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094

出　　处：《电光与控制》2010年第7期11-13,69,F0003,共5页Electronics Optics & Control

基　　金：国防预研基金资助(9140A01020107BQ0211)

摘　　要：针对表面温度变化会影响毫米波辐射温度的问题,对隐身目标表面温度变化情况下的毫米波被动隐身效果进行了建模研究。在分析发射率受变化的物理温度影响的基础上,提出了目标辐射温度的温变模型,并利用3 mm交流辐射计测量得到的发射率计算相应目标的温变系数。然后,使用3 mm直流辐射计直接测量目标的辐射温度,并与模型计算结果进行比较,验证了模型的正确性。最后,使用温变模型以及常温测试数据,预测了不同温度条件下的隐身装甲车辆模型的表面辐射温度分布情况。The changing of target surface temperature can influence its millimeter wave radiation temperature. The targets＇ passive stealth feature was studied when its surface temperature varies. Firstly, the temperature variation model of the target＇ s radiation temperature was built up based upon temperature＇ s effects on emissivity. And the coefficients of the model were calculated by means of the emissivity measured by a 3 mm AC radiometer. Secondly, the radiation temperature of target was calculated by the model. And it was compared with measured value of a 3 mm DC radiometer. The comparison result proved the correctness of the model. Finally, the radiation temperature distribution of stealth armored vehicle model at different temperature was forecasted by using the temperature variation model and the measured data at normal room temperature.

关 键 词：毫米波 被动探测 建模 隐身 发射率 辐射温度 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN215[电子电信—物理电子学]