双色导引头的光电对抗与双色干扰诱饵

EOCM of bichromatic seeker and dual color decoy

紫外／红外双色制导是一种先进的红外点源制导，能够对抗红外干扰机和红外诱饵弹等常规干扰，因而采用此制导技术的近程防空导弹对低空战斗平台构成严重威胁。文中以最早应用此技术的美国改进型尾刺（ＳｔｉｎｇｅｒＰＯＳＴ）导弹为实例，对双色制导的干扰作了一些研究。首先，从玫瑰线扫描、双模制导和双色识别等三个主要方面详细地阐述了双色制导的抗干扰原理；在此基础上讨论了紫外／红外复合烟幕的双波段衰减特性、双色有源干扰机的信号模式和等离子体气悬体的干扰方法，指出了几种干扰技术的应用前景；然后详细分析了一种有效干扰途径———双色干扰诱饵。根据目标的光谱特性计算了目标的双波段辐射比，给出了诱饵的双波段辐射强度及相关特性的要求，并讨论了诱饵的投放；最后提出诱饵研究中尚需解决的两个问题：双色辐射比和紫外暗点。

UV/IR dual color guidance is a type of advanced point source IR guidance. Due to its capability of counter conventional jamming such as IR jammer and IR flare decoy, short range aerial defence missiles employing guidance technology of this type have become serious threat to aircraft flying at low altitude. Take American portable missile Stinger POST as our study case which employed dual color guidance first, some study work have been done to counter it in this paper. First, the principle of counter countermeasure of the guidance is explained in detail from three aspects of rosette scan, dual color discrimination and dual mode guidance. Then based on it, several countermeasure technologies including UV/IR compound smoke screen, dual color jammer and plasma air mass are discussed and the application possibility is predicted. After that, dual color decoy, an effective way to counter it, is analyzed with emphasis, the radiation ratio of two interested band of target is calculated based on the spectrum of it, the requirements of radiation power and property of decoy and its launch are pointed out. In the end, two main problems solved in future are presented: radiation ratio of two bands and negative point in ultraviolet band.