一种基于模板匹配的Link22快速识别技术研究  

Research into a Fast Recognition Technology of Link22 Based on Template Matching

作　　者：孙超[1] 徐盼盼 SUN Chao;XU Panpan(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《舰船电子对抗》2025年第2期76-79,共4页Shipboard Electronic Countermeasure

摘　　要：Link22是一种抗电子干扰、保密可靠、灵活机动的超视距新型数据链通信系统,未来将会取代Link11。为了适应不同传输环境,Link22网络使用了多种波形以达到信息的高效稳定传输。为了快速识别出Link22信息传输所使用的波形,提出了一种基于模板匹配的快速识别方法。首先,根据Link22网络在HF频段的7种波形分别建立星座图模板,然后利用目标信号的解调星座图与模板进行相关匹配,通过比较相关系数与门限值,达到快速识别波形的目的。试验结果表明,该方法在较低信噪比条件下具有较高的识别正确率,可应用于工程实现。Link22 is a new type of data Link communication system with the functions such as antielectronic interference,being confidential,reliable and flexible,beyond line-of-sight,will replace Link11 in the future.In order to adapt to different transmission environments,there are various waveforms used in Link22 to realize efficient and stable transmission of information.In order to quickly identify the waveform used in Link22 information transmission,a fast recognition method based on template matching is proposed.Firstly,constellation map templates are established according to the seven waveforms of the Link22 network in the HF band,and then correlation matching is performed between the demodulated constellation map of the target signal and the template.The purpose of rapid waveform identification is achieved by comparing the correlation coefficient and threshold value.Test results show that the method has high recognition accuracy under the condition of low signal-to-noise ratio and can be applied to engineering realization.

关 键 词：Link22 模板匹配 调制识别 

分 类 号：TN971.1[电子电信—信号与信息处理]