摘要
提出了一种基于分段拟合的提取舰船噪声信号功率谱中线谱特征的方法。该方法利用分段拟合方法拟合出信号功率谱的连续部分,从原始功率谱中减去连续谱得到拉平的线谱分布,然后进行线谱特征提取。实验证明了该方法的有效性,而且分类效果很好。
A new method of line - spectrum extraction of ship radiated - noise based on part imitate was proposed in this paper. The method using the part imitate extract the continuous spectrum of the signal spectrum, than extract line - spectrum from the relatively fiat line - spectrum by subtract it from the former spectrum. The results of experiment show that the method is effective and the classification rate is higher.
出处
《微处理机》
2006年第4期88-90,共3页
Microprocessors
关键词
分段拟合
舰船噪声
线谱特征提取
Part imitate
Ship radiated - noise
Line - spectrum extraction
