基于LINK4A信号暂态特征的目标识别技术

Individual Identification Technology of Link 4A Data Link Based on Transient Characteristic

Link 4A数据链是美海军普遍使用的一种战术信号,该数据链的用户主要为美大型舰船,获取这些目标的身份信息对感知战场态势有很大帮助。在研究Link 4A数据链的信号结构基础上,通过对该信号启动位的暂态特征进行研究,提出基于时频谱奇异值的舰船目标识别方法,并进行了试验验证。实验结果表明,该脉冲暂态特征可满足目标个体识别的差异性、稳定性和检测性要求,能够用于Link 4A数据链的个体识别。

Link 4A data link is an important tactical signal which is generally used by US navy’s large-scale combat ship. How to identify these properties of users will help us to obtain the battlefield state. Based on the analysis of the Link 4A signal frame structure, the start-up of bit’s transient characteristics is anaylzed, and an individual identification approach is proposed with the time-frequency spectrum singular value. The experimental results show that the demand of the target distinguish could be satisfied with this transient difference, stability and detectability feature of bit which can be used for the Link4A data link individual identification.