摘要
针对舰船轴频电场存在于1～7 Hz的频率范围且存在明显谐波成分的特点,将谐波簇自适应线谱增强技术运用到舰船轴频电场信号处理中。通过仿真研究确定了相关参数,对测试信号处理后,其线谱功率谱强度较附近连续谱增强了0.056μV/m,可见将该方法运用于电场轴频信号处理可以有效地抑制背景噪声。
Shaft-frequency electric field of ship exists in 1~7 Hz and it has obvious harmonic waves.For these characteristics,harmonic waves adaptive line enhancer technology was applied to signal processing of the shaft-frequency electric field of a ship.Correlative parameters were determined through simulation.This method was used in measurement signal.The power spectrum intensity of line spectrum increased by 0.056 μ v/m higher than continuous spectrum.It was proved that background noise can be restrained effectively in shaft-frequency electric field signal with this method.
出处
《装备环境工程》
CAS
2011年第2期29-32,共4页
Equipment Environmental Engineering
基金
水下测控技术国防科技重点实验室项目(9140C260304080C26)
关键词
轴频电场
谐波簇
自适线谱增强
Shaft-frequency electric field
harmonic waves
adaptive line enhancer
