摘要
112维谱可加强成整数倍谐波信号的基频分量,抑制高斯有色噪声及对称分布的噪声,剔除非二次相位耦合的谐波分量,这些特性对提取舰船轴频电场线谱十分有利.采用该方法对船模产生的轴频电场实测数据进行了处理,实验表明它可以有效地将微弱的轴频电场信号从背景噪声中分离出来.
This paper presents a 1 1/2-dimension spectrum-based method fortesting the shaft-rate electric field of a ship. By means of the spectrum, the fundamental frequency component of the harmonic signals can be enhanced. Gaussian color noise and symmetrical distribution noise can be canceled, and non-quadratic phase coupling harmonic components can be eliminated. These properties are beneficial to the extraction of line spectrum of the shaft-rate electric field of a ship. Experimental and practical results show that the method is effective.
出处
《武汉理工大学学报（交通科学与工程版）》
2008年第5期892-894,共3页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国防基金项目资助(批准号:5144407105JB11)
关键词
11/2维谱
舰船
轴频电场
线谱
11/2-dimension spectrum
ships
shaft-rate electric field
line spectrum
