基于小波包和ZFFT的舰船辐射噪声调制特征融合和提取  

Fusion and extraction of modulation feature from ship radiated-noise based on wavelet packet and ZFFT

作　　者：张福生[1] 冯达[1] 

机构地区：[1]中国人民解放军91388部队92分队

出　　处：《电子世界》2014年第14期105-106,共2页Electronics World

摘　　要：舰船噪声调制包络谱是水下目标识别的重要特征。本文提出了一种基于小波包分析和ZFFT的高频噪声解调分析(DEMON)方法,对多子带包络谱进行融合,得到了线谱特征明显的DEMON谱;利用倍频算法,对DEMON谱进行了轴频提取。舰船实测数据证明该分析方法的可行性和有效性。Modulation envelop spcctrum of ship radiated-noise is one of impottant feature for undcrwater target recogoition.In this paper, a method based on wavelet packet analysis and ZFFT is proposed and by which we can get a DEMON spectrum which has only distinct line-spectrums.Then, we use the double frequency algorithm to extract the shaft frequency. Experiment result based on real data from ship shows that the method is feasible and effective.

关 键 词：舰船辐射噪声 调制包络谱 多子带包络谱融合 轴频提取 

分 类 号：TN975[电子电信—信号与信息处理]