我国轴频电场研究现状

Research status of shaft-rate electric field in China

舰船电场是舰船在水中非常关键的目标特性,舰船电场的研究对海洋安全意义重大.作为舰船电场的一部分,轴频电场由于信号线谱特征明显、传播距离远、衰减缓慢等特性而成为学者们研究的重点.轴频电场的重要特性在舰船隐身、水中兵器引信设计、舰船目标探测等方面均具有重大应用前景,对其展开深入研究有利于维护海洋安全.此文从轴频电场研究历程出发,介绍了轴频电场的产生机理,之后主要从轴频电场信号探测、轴频电场目标识别与定位、轴频电场建模与仿真、轴频电场的抑制与抵消4个方面介绍了目前国内对轴频电场的一些相关研究进展,并分析与总结了各种研究方法(如自适应谱线增强的检测方法、基于高阶累量的检测方法等),指出了当前存在的问题与挑战,最后对未来的研究发展提出了展望,为进一步对轴频电场的深入研究和相关技术的发展提供了借鉴和参考.

Electric field of warship is a crucial characteristic of the ship in the water,and the research of ship electric field is significant to marine safety.As a part of the warship’s electric field,the shaft-rate electric field has become the focus of research by scholars due to its obvious signal line spectrum characteristics,long propagation distance and slow attenuation.The important characteristics of the shaft-rate electric field have great application prospects in warship stealth,underwater weapon fuze design,detection of ship and other aspects.Besides,it is beneficial to maintaining marine safety by carrying out in-depth research on it.Firstly,starting from the research process of shaft-rate electric field,the mechanism of shaft-rate electric field is introduced in this paper.Secondly,we introduce some relevant research progress of shaft-rate electric field in China from four aspects:signal detection of shaft-rate electric field;target recognition and locating of shaft-rate electric field;modeling and simulation of shaft-rate electric field;as well as suppression and cancellation of shaft-rate electric field.Afterwards,we analyze and summarize various research methods,such as the detection of the adaptive line enhancement method,detection method based on the higher-order cumulants,and point out the current problems and challenges.Finally,prospects for future researches and developments are presented,providing reference for the in-deep study of shaft-rate electric field and the development of related technologies.