一种Alpha稳定分布噪声下目标螺旋桨特征提取方法  

Extraction of Target Propeller Features in Alpha Distribution Noise

作　　者：王彬[1] 侯越圣 WANG Bin;HOU Yuesheng(PLA Strategic Support Force Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]战略支援部队信息工程大学,郑州450001

出　　处：《电子与信息学报》2020年第10期2478-2484,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61572518)。

摘　　要：为了解决Alpha稳定分布噪声下目标螺旋桨特征提取问题,该文提出一种基于分数低阶循环谱的特征提取方法。首先,从理论上推导出脉冲噪声条件下舰船辐射噪声分数低阶循环谱,指出分数低阶循环谱中出现峰值与螺旋桨特征的关系。然后根据该关系,提出基于分数低阶循环谱的螺旋桨特征估计方法。最后,通过仿真实验验证该方法的性能,并通过实测数据进一步验证了算法有效性。In order to solve the problem of target propeller features extraction under Alpha stable distribution noise,a method based on fractional low-order cyclic spectrum is proposed.Firstly,the low-order cyclic spectrum of ship radiation noise in impulse noise is derived,and the relationship between the propeller features and the peak value in the fractional low-order cyclic spectrum is given.Based on this,a propeller feature estimation method based on fractional low-order cyclic spectrum is proposed.Finally,the performance of method is verified by simulation experiments,and the effectiveness of the algorithm is further verified by the actual data.

关 键 词：ALPHA稳定分布噪声 螺旋桨特征提取 分数低阶循环谱 

分 类 号：TN911.7[电子电信—通信与信息系统]