基于脉冲前沿细微特征的LINK4A数据链个体识别

摘要

Research on the individual identification of LINK4A data link,which is generally equipped by US navy’ s combat ships, can achieve the objective of using the detected data link signal to discover the related off shore ship platform.Besides,it can provide support for the research of the ship’s operational command system and combat intension.Based on the analysis that LINK4A data link signal has some characteristics embodied in radar pulse signal, the instantaneous amplitude, zero medium frequency spectrum and ambiguity function’s near zero frequency slices are extracted from pulse’s front edge.The experimental results show that the above parameters have good stability and validity,and the accuracy of the individual identification is more than 80%.So the method proposed by this paper can effectively resolve the problem of LINK4A data link’ s individual identification.%研究美国海军主战舰船装备的LINK 4 A数据链的个体识别，可达到依托侦获数据链信号判定相关海上舰船平台的目的，并为研究其作战指挥体制、作战意图提供支持。在分析 LINK 4 A 数据链信号具备类似雷达脉冲信号特征的基础上，通过采用雷达辐射源个体识别的方法，提取了其脉冲前沿的瞬时幅度、零中频频谱以及模糊函数近零频切片等具体的细微特征参数，用于个体识别实验。实验结果表明，上述细微特征参数具有较好的稳定性与有效性，对LINK 4 A数据链信号的个体识别准确率均在80％以上，能够有效地解决LINK 4 A数据链的个体识别问题。