一种基于负熵的舰船轴频电场信号检测方法

轴频电场是运动舰船在海水中产生的一种重要的物理场,它具有明显的线谱特征,是很难被隐身的舰船特征信号。运用Q-Q图法和Epps-Pulley方法对实测的海洋环境电场的高斯性进行了检验,检验结果表明环境电场具有良好的高斯性,在此基础上,将负熵准则应用于舰船轴频电场信号检测中,利用目标信号和环境噪声在负熵域上的显著差别,使用浮动门限将目标准确地检测出来。实测数据的处理结果证明了方法的有效性和优越性。

Novel approach for shaft-rate electric field signal detection based on negentropy

Shaft-rate electric field is a kind of basic fields generated by moving vessels, which has stable line spectrum characteristic and can not be concealed easily. This paper addresses detecting vessel targets in marine environment using their shaft-rate electric field signature. Firstly, Guassianity tests based on Q-Q plot method and Epps-Pulley method are used to verify the Gaussianity of marine electric field data. Then, a novel negentropy-based detection approach is proposed for shaft-rate electric field si...